You may want to try fixing some of the staple ingredients en masse. Try chicken or chicken stock when you're meat eating, steaming a bunch of veggies or doing a large pot of pasta or rice when you're not.
Then you have some of the basic ingredients ready so you can mix up dinner for one without a lot of fanfare.
When I make something from a recipe I typically do a larger serving so I don't have to do it all again tomorrow night. Separate into smaller containers, label and freeze.
Think of it like personalized, low calorie, cheaper tv dinners :)