Fake it till you make it

To act like you are something so you can, in fact, become that thing.

There is a lot of truth in this old phrase.  At its root, I think it means that you don't have to be perfect before you begin to be something or do something.  You just have to begin to be something or do something and with practice and development, you can be or do that thing.

No one is born fully made, no one takes up a hobby and is perfect before they start. 

I teach a lot of beginner classes and there are always at least one of each of these people:

1. Perfectionist: Within the first five minutes, they're frustrated because whatever they're working on isn't perfect.  They don't usually listen to instruction and just forge ahead without thinking and then get angry when they fail.  Most of the time they quit because they're not instantly perfect.
2. Happy Dabbler:  They listen to instruction and forge ahead, come hell or high water.  Their work is usually messy and crazy but they have fun and enjoy the process.  They will take the time to figure out whether they enjoy the craft and not and, if they do, they continue on and learn and share the joy of the craft.

Then there are usually people in the middle of the two.  If you want to be creative, be closer to the second than the first.  A Perfectionist will never allow themselves to fail and you can't create without failing.