Says you. 
Exercise has always supercharged my weight loss efforts.
I am old and fat so there is not that much I can do, but I do some body-weight exercises and some light lifting with dumbbells: situps, planks, bridges, pushups, bent-over dumbbell rows, upright dumbbell military press, and dumbbells curls, every other day. I try to get in a 2 mile walk 5 days a week. I am trying to get that distance back up to 3 miles, which I used to do regularly a few years ago.
The 2-mile walk at my weight works out to about 300 calories burned, so 1500 per week. May not sound like much but over 1 year that would equate to 78,000 calories which (if the 3500 calories = 1 pound rule is valid) works out to about 22 pounds of weight loss over a year compared to dietary changes alone. Small amounts add up over long periods.
Building muscles through weightlifting = converting fat to muscle, and a pound of muscle is both denser (meaning you look slimmer) and burns more calories at rest than a pound of fat, so having more muscle mass increases your base metabolic rate.
If your goal is weight loss, then weight lifting / muscle building is more effective than cardio based on my personal experience. It’s the increase in resting basal metabolism from the extra muscle mass that makes the difference. It’s working for you all of the time.
