One question that I have is: What do you mean by worthwhile? If it is about your feelings, you would have to try to do a, at least a few things you feel you want to draw and make you feel.. I guess, more accomplished
If it's the case of work or how you feel your work is worthwhile towards others or oneself, I would
recommend trying to check what type of kinks the people that normally fallow you have. (Like a questionnaire or something).
I hope this helps give you some ideas. (If I'm not being the "no shit sherlock guy" XD).

Hmm, I don't think it's kink related, it's just kind of an overall feeling I guess? I'm not sure, I've always been bad at thinking about what I want in life and such @_@

I think I can relate, like; one would think: I Love to draw stuff, I'm gonna focus and try to improve... Then later on in life, you find that there are about a hundred ways to go about this. Eventually, you will find one.
In your profile, it says you're 29. At least in my book that is relatively early to have a set path. So in this case I would recommend finding what your likes and dislikes are, and metaphorically, figure a path that goes mainly trough your likes while trying to resist, or for a better of a better term endure your dislikes. As it's one of the things I find It can be much avoided. And once you figure that out, try to lean towards that path.

Resuming. If the text was too long.
In other words, try to make your life around things you like, but don't ignore the things that you don't like. Acknowledge them and try to move forward. That is as much advice as I can give without knowing you personally; mental health, job, societal status, etc.

Thanks for the advice, I really appreciate it ^^

just hang in there, find that passion and spark. a break good at times, the feeling of going going going nonstop can be stressful.

Thanks bud, I'll keep at it ^^

Yeah, I think I'll give that a try as well, thanks for the advice ^^

TBH I've been feeling this problem for a while now, too. I do art for others and not so much myself, so my art has kind of lost it's identity for the most part. I realize I kind of do a bunch of different things and I want to actually more hone in on what I would consider to be my specialty (with like, some room for flexibility, sure).

I wish you luck on your own search with your art. ^_^

I wish you luck as well, thanks for sharing ^^