I cant even complain much. Yeah drawing can be a drag some days, and I struggle with consistency at times, but what artist doesnt? There are days when I feel like art is becoming something that I loathe, but then I remember that A) this is a decision I chose, and I could end it anytime I want, B) I start to think of the end result- me selling my books at cons and being happy that I've gotten the opportunity to reach that goal, and C) that I could be WAAAY more miserable doing something else; I didnt do any art for a decade while raising my kid, and it made me really miserable(art is a stress outlet at times).
So when I do get down from doing my art, I try to re-iterate the reasons for me doing what I do. I also take small breaks to get away and come back refreshed.
At this point in my life, "f**k it " is always an option; nothing is set in stone.