Take walks. I do thought walks every single day. It feeds the soul but, it also feeds the mind. Sometimes if you try to think about the problem all the time, you are actually getting farther away from the solution. Whereas if you just take a walk you notice something in nature and it sparks the idea you have been looking for. That has really fed my soul. It's helped me get my steps in every day. That is probably the most productive thing I do every day are my thought walks.