I have been cooking for almost 50 years! I love cooking and experimenting with foods and new recipes. So cooking blahs for me are rare.
Since we have a limited growing season in our region, fresh produce that is locally produced is a treasure. Our farmer's market is only open from June through October. Some years it is harder to grow indoors during winter than others. The local CSA is hardly varied enough to provide what we don't grow ourselves.
I use the warmer months (I'm sure they are coming even to us here in NE Ohio

) to try out new recipes for salads, chilled Soups, black bean burgers. We eat lentils, quinoa, amaranth, brown rice, barley, beans regularly. We like veggie pizza with a whole-grain crust and lots of garlic. Make it before bed, refrigerate it and eat cold pizza the next day for lunch or dinner. Hummus or tzaziki with veggies is a great hot weather meal, imo.
One thing I have been doing for years is dividing meat (beef or pork) into 1/4 pound packages. Between the two of us that is 1/8th of a pound of meat at a time. It started as a cost-cutting thing; but I think we are healthier for not eating as much meat as we once did (of course this is just my personal opinion).
So you could look into a local CSA, or try to grow some things yourself in your off-season (if applicable to your area). Other than that try something new; get out of the rut that we all fall into after a while, of having the "same old, same old" all the time.
Crock pot cooking is a treasure. That way you don't cook after a long day.
Do some searches, there are a LOT of a variety of recipes here on SS.

Something here is bound to whet your appetite.
And I am sure others will have something to share as well. Good luck!