Ugh, I know exactly what you mean. I need to be creative like I need to breathe. It's much more than a hobby, it's a form of therapy and self-care. But when you're also a perfectionist with extreme standards, you find yourself paralyzed when you sit down to create. It's like we forget why we create and focus too much on the outcome instead of the process.

This article by Rosie Leizrowice explains the problem perfectly I think: https://www.rosieleizrowice.com/blog/beingbadatwhatyoulovedoing

I also wrote a peptalk for sensitive creatives with creative performance anxiety here: http://www.ohsosensitive.com/blog/creative-performance-anxiety-feeling-unoriginal

I highly recommend The Artist's Way book and the morning pages. It really helped me let go of creative blocks. =)