My outlet is writing, but I guess this could applies to whatever form your creativity might take (music, painting, cartooning, whatever).
I used to pretty much define myself as a writer when I was a kid, but I never had any support for it (my mom pretty nagged me NOT to write and I never found any peers who liked to write) so I basically stopped in high school, and the urge to write gradually died out over the last decade. Meanwhile, I've gotten increasingly depressed over the years and felt like I lacked a focus.
Now, I'm trying to get back into writing again, my body is like urging me to do it again, but I just can't figure out how to start (it basically boils down to maybe perfectionism - not knowing what to write and not knowing how to start and so convincing myself that I just can't find the time).
But I'm wondering, have you ever given up something that you felt you were designed to do, and the found you had a hole you could never fill? Did you try to pick it up again later on? Part of me feels ashamed that I've wasted all these formative years not writing, and I wonder if I can ever "catch up" to where I should've been. But then part of me thinks that a lot of problems I face (depression, sleeping problems) could be helped if I just rediscovered my creative outlet. Think there's any truth to that?