How does one start again?

Recognizing that failing once is not failing forever. So often we fail, or do badly at something and we say "welp, that's that I guess." when It's something that is important, It's important to remember that you will fuck up and fail a lot.

This is not directly related, per se, but this quote from Ira Glass sort of exemplifies the mindset I think more people need to adopt:

Nobody tells this to people who are beginners, I wish someone told me. All of us who do creative work, we get into it because we have good taste. But there is this gap. For the first couple years you make stuff, it’s just not that good. It’s trying to be good, it has potential, but it’s not. But your taste, the thing that got you into the game, is still killer. And your taste is why your work disappoints you. A lot of people never get past this phase, they quit. Most people I know who do interesting, creative work went through years of this. We know our work doesn’t have this special thing that we want it to have. We all go through this. And if you are just starting out or you are still in this phase, you gotta know its normal and the most important thing you can do is do a lot of work. Put yourself on a deadline so that every week you will finish one story. It is only by going through a volume of work that you will close that gap, and your work will be as good as your ambitions. And I took longer to figure out how to do this than anyone I’ve ever met. It’s gonna take awhile. It’s normal to take awhile. You’ve just gotta fight your way through.

A lot of us know, when we start... working out, let's say, that going once around the track is not enough to get Swole, but we can't do more. The "gap" that Glass is talking about exists here too, between what we know we need to do and what we can currently achieve.