Sleep changes everything!
Once upon a time, I bragged about how little sleep I needed. 3, 4 5 hours? Perfect. That's good enough for me! Somehow, I explained my weight gain and stressed attitude to other factors in my life.
Then I read a book that stressed in order to be your healthiest self, getting enough sleep and drinking water must become top priorities. So. I focused on getting at least 7-8 hours of sleep a night.
And... It. Changed. Everything.
My weight stabilized as I didn't need sugar and caffeine simply to keep my eyes open. I could see challenges in my life more clearly and they didn't overwhelm me as much. Plus, I had more patience and productivity throughout the day.
Today, I am so protective of my sleep schedule. (Which is very tough because I wake up for work as nearly everyone else is going to bed.) But I can tell a HUGE difference when I don't get sleep.
Try it. Make sleep a priority.