Small consistent changes can have a big impact on improved health. I lost my first 20lbs by doing 2 things - committing to walking on the treadmill for 1 hour DAILY [no matter what] and no alcohol during the week. Poof 20lbs gone in 3 months with very few changes.
Start small, make it a habit, and build from there and add more things that will keep you moving toward your goals. It doesn't have to be all or nothing. I am proof of that.
Get out of the "What if" lane in life and get in the "When I" and "I know I am important" lane and start working on YOU.