Ffff yeah, I've felt insecure about my own comic a lot lately. It's very niche in nature, so I was prepared for it to not get many people willing to give it a chance. Although a lot of times I've been thinking "Is my comic actually really bad? Maybe it's terrible, and no one is willing to tell me.", "What if I'm being too insensitive about the subjects?", "Should I even be writing about characters like these? I'm not X or Y, and people always say only people who are those should write stories about them. I mean I have T, B and N, but not X and Y.", "My art is really ugly. I really can't do composition, and I call myself an artist?", "I get this really good advise but never take it because I'm too stubborn", "I don't have a Psychology degree, I shouldn't even be doing a comic like this."
Stuff like that, but I still keep working on the comic because I have a story to tell, and I really like the process... even though I don't really read my own work or really like it. The process, and getting the story done is all that matters for me. Who cares if it sucks, at least I'm enjoying myself.