I'm absolutely not satisfied with any of it. I often get really depressed after finishing something because all I can see is flaws that I don't know how to fix. As a result, I guess, I can't take compliments on my work to heart. However, before starting my comic, I was in an artistic rut. Now that I'm putting out a page a week, I can both feel and see myself improving again after stagnating for so long. I look forward to the day when I can finish something and think, "yes, this looks exactly as I intended it to." Each unsatisfactory page I finish is a step toward that.
I feel similarly about other creative things I do: game dev, pixel art, 3D modeling, sculpting. Finish your mediocre projects, learn from them, and eventually create something you can honestly love. That's my goal.