It's pretty clear that energy in-energy out dictates weight loss and gain, with the exception of medication side effects and certain pathological conditions. But I lived in denial for a long time that I was the reason for my inability to lose weight, or to maintain any weight loss I did achieve.
I wrote about my own struggles with weight and how I lost 75 pounds on a calorie restriction diet at Medium.
It hasn't been easy, and I am still struggling to make the changes permanent. But for those who are struggling, I hope my journey gives you a little hope that it is possible to succeed.
I did a lot of reading about calorie restriction diets before jumping in a few years ago and the exercise regimen I used was, and is, light - walking and simple yoga stretches. Be sure to discuss any potential heart, joint, or muscle problems with your doctor before starting an exercise regimen, as well as any supplements you may need for whatever diet you choose to adapt.
Dieting is only temporary, but lifestyle changes in how you approach nutrition can make any gains permanent.