Dishes with leftovers that don't suck?

Hi! I'm sorry if this isn't the right place for this, or if it's already been asked..but does anyone have any recipes where the leftovers don't suck? I spend a decent amount of time in the kitchen and don't consider myself a beginner - so I'm open to all sorts of recipes.

I'm trying to avoid food waste but am currently dealing with health issues. A lot of my meals don't get finished, I try to save them, but at leftovers they really suck. Any suggestions, recipes, tips or tricks would be appreciated. Thank you!!