Our hobbies are meant to fulfil us. I mean, sure, they'll stress you out sometimes, but they shouldn't put you off of doing them! I felt so ashamed when the project went wrong because I felt like if I work in a yarn shop, I shouldn't make mistakes, I should just Be Good At Stuff Always.
It's so easy to feel like you've lost a part of yourself when you go through a slump and nothing inspires you. You haven't lost it, though, it's still there. It's just waiting for you to be ready to utilise it again.