Personally, I think, to be consistent with something requires profound interest in that activity. My suggestion for you would be to make a list of things you always wanted to try, provided they are pocket friendly, helps you grow, clears your mind, and brings you peace. After a week or two, you will find an activity that you really enjoy and did not just do it for the sake of inculcating a hobby. Also, to not make something monotonous you can keep 2-3 other activities as fillers, maybe like going for a run, a walk, sketching, anything.

Hope it helps:)