Welcome!
I am unsure if I will be of any help as I need to do things suiting my own personality and circumstances…
I go off all the time since several years, I am mostly fine with this except I want to make my off times more rare and better
But that happens automatically (off times aren’t as blissful as before carnivore…), I am still changing, it will be even more fine later
But no way I giv e up any food I happen to fancy!
I can handle it but saying no to me, that would bother me. I merely train myself to want the right things, it goes quite well but takes time.
To me, trying carnivore brought the big changes. I just was off too often on my normal, meat- and benefitless keto… Well it was a special change and surely meat helped but I REALLY needed very very low carb from non-animal sources. Plant carbs mess with me somehow, even in ketosis, I had an unfortunate relationship with food (okay it’s still not perfect but loads better), I was too focused on it and with the carbs, I lacked the “impossible to eat” perfect satiation to stay away from the fridge at night and stuff (sometimes I got truly hungry).
I like experimenting anyway and tried out many things. So I know that the right items matter A LOT, at least for many of us. Some people just do keto and all is well. I am not like that but the right food choices make wonders. I especially need to be mindful of what I eat if I want to make sure I won’t overeat. The wrong, not satiating item and I overdo protein and fat, sometimes quite epically. And that’s just wasteful, among other problems.
Timing may be important too. And zillion other factors I don’t have, stress eating, bad sleep… Humans are quite complex and it’s the same with the effect of our eating on our health. I can just say a few general things and my personal experience but it may be close to useless for your individual case.
I don’t do food things out of motivation. Or my motivation is getting maximal joy
Well that’s a great motivation I suppose… Nothing is less hedonistic than feeling unwell and getting sick so my hedonist inner self (it’s the boss :)) is inevitably health-conscious. If I know something is bad for me, I typically lose interest. I like my body and it deserves the best I can give to it. Or close, aiming for total perfection, no matter what is usually unhealthy
I do what I comfortably can, more like.
The problem is with motivation that you sometimes just lose it, life gets into the way and you just DON’T CARE so much, it happened to me many times. I still want to stay healthy and stuff so I won’t start to eat totally stupidly (usually… but I think I completely lost the worst things and anyway, the worst my off eating is, the more extremely rare it is. and my body can handle that. if I got sick, I never would do the thing, I HATE being in pain and feeling miserable. no food is worth it, anyway, my best food is carnivore) - but yes, sometimes I just can’t bring myself to care about my smart rules about my woe.
And then… I typically still eat keto as what else?
It’s good food, it’s what I am very used to… Good habits are powerful too, not just bad ones. And the more I do keto especially the very low net non-animal carbs version, the stronger my habits become. I like my food more and more. I CAN’T and won’t resist true temptation and I am easily tempted. I won’t be “strong” and “self-controlled” ever I think. I need training, changing and good habits. And LOVING my food
So I am safe.
That’s what I do. But I am very much aware that others need a very different approach, they are ABLE to be strong and controlled, they don’t quit the moment they feel things hard… And they may evolve way quicker than me but I don’t care as I only have this option.
But getting rid of all those plant carbs really and immediately helped a lot to me. I just got way more FREE.
Food prep: I toss a lot of meat into the oven (it takes a few mins of my time, it does the roasting all alone) and that’s for the next few days for base of my eating… Boiling eggs or grabbing some ready to eat sausage or cheese is pretty simple too. I like cooking and especially baking and I need variety so I complicate things a bit more but I can eat without cooking for days if I want.
On the road: it’s rare for me but I pack food
And one can buy certain things in supermarkets if the travel is longer.
Social pressure: I probably don’t know what that is. Good luck to pressure me, never cared much about what other people wants when it’s MY business only. But I can get tempted (less so as time passes but it’s still there). Packing food and bringing food may help. I used to bring my own cake or savory muffins and others liked them too. Resisting baked goods when I don’t have my own is significantly harder. I bring my own “bread” too as I used to go off keto too often because I needed something like that at a relative and there was only normal bread (that I don’t even like at all so my hedonist inner self is sad if I eat it. bad deal. no joy, all the disadvantages of carbs… I want to enjoy the hell out of my rare off eating). I don’t eat that stuff anymore but I had that problem just a few years into keto and several into low-carb and before carnivore. Carni changed me a lot, for the better, even in my not clean and on/off style, I am very thankful to it
But it’s just my great happening, many others need other “tweaks”.
If I ever felt social pressure, I would just use my knowledge, common sense and hedonism. WHY would I eat something bad for me (if I can resist it)? How insane is that? Harming my body, making bad deals, what? NO. Sometimes it’s not instinctual even for me and I need to stop and think and persuade the silly voice tempting me. I have a very good idea what is good for me and I do want good to me so it helps a lot. Other people have no right to interfere, it’s not their business. I don’t listen to others when I make choices about my personal things. And eating affect me quite seriously…
Social pressure can be quite strong (not for me but I know about things even if I barely ever meet a human besides my SO) but we need to put our food down, for ourselves. I am very selfish as one should be, I am on my own side and I protect myself so it comes naturally to me. I don’t say it’s perfect, oh yeah lovely family members showing their tempting freshly baked goods… But my problem was the temptation, my own desires - and I only desired to please the relative a tiny bit, I greatly desired the food itself…
It can be a long road with lots of thinking and training, feeling bad may help, sadly (well no I like I am sturdy and I HATE feeling bad) I barely ever feel bad after eating a bunch of sugar if it’s just one time… There is less motivation to say no but if we think it over and especially if it happens too often, we eventually should put things right in our head.
DON’T feel quilt, I never do and consider it super anti-hedonistic. Well if only quilt helps you to stay healthy, feel it, I suppose… But it’s not a crime to eat wrong. A huge problem but you should aim for better, not being tied down by feeling guilty or a failure - when it’s just food, of course you do it wrong, almost everyone around you do that and it’s hard to get it really right and for some of us, it probably never will happen ALL THE TIME. It’s fine, our body can handle some non-ideal things (those happen all the time, after all), we just should keep it low where we have control over it. And it’s very rare that someone hasn’t some (usually big) level of control over their eating. Well, in 1st and 2nd world, at least.
Why is hard for you to get into keto? That was always super easy for me (except a few times. but I went on/off keto hundreds of times and most were fine). It’s even easier for me now that I don’t enjoy my off times as much as my carnivore-ish ones.
I do had low-carb years before keto (that was needed), lots of great recipes and the desire to make more, everything to feel my woe is the possibly most enjoyable… But maybe if I know what is your problem with the change, I can say something that possibly helps…? I am lucky as I wake up and get a tabula rasa to a great extent. Determination helps too. But even if there is a siren song of carbs, you can just grab some very proper keto food and eat it first. A full belly may be quite effective. Of course our hungry mind may get stupid ideas when carby times are still close. It could wear me down but if I am hungry, I grab some proper food and it stops.
Good luck! And don’t think that having off times makes your keto times not useful
You still practice doing keto, forming new habits, at least I strongly felt that in my case. It got more and more natural. I couldn’t stick to keto longer but my off times became shorter and probably less wild too. Practice makes things all better. You don’t get back to the start line when you restart keto 
Maybe you know much of these, that’s good. But I saw people making so obvious (to me) huge mistakes so I just wrote a lot of stuff I consider useful and important. I hope I helped a tiny bit.