Step 1: Easy Does It
Most people who claim they hate to cook simply lack the skills. If you struggle to boil water, well then yes, it’s a royal pain. However, the more adept you become in the kitchen, the less you will consider it a chore and the more you can celebrate life with good eats.
When you first started to exercise, I doubt you went to the nearest gym and followed an aggressive six-days-a-week training routine. Instead, maybe you started a walking program, and then, after awhile, perhaps you got a bike, and then somewhere along the line you progressed to weighted workouts.
Set a goal to plan and prepare at least a couple of dinners a week. One-dish meals are a good place to begin. The clean up is less and you can make a big batch for multiple meals. Soups and casseroles, especially this time of year, are a great place to start. Check out this Crock-Pot recipe to get you started.