You want to start something new. You aren't going to be good yet and it might take a long time.
There will be constant temptation to put your energy into something that gives you an immediate return. To clock more hours in the day job. To take on a project that will pay you now. And sometimes you'll have to do that to keep food on the table.
But if you want it bad enough you have to give yourself permission. You have to believe in your gut that it's the right thing to focus energy on even though it doesn't look like it in the moment.
Let people think your crazy. It's better than giving in and driving yourself crazy because you didn't see it through.