Writing is not just creating a story, it's building a part of you. 
It doesn't matter what you write, you are sharing a part of yourself with the world, even if you choose not to share it. 
It doesn't matter if you do not think your writing is the best, because you are learning with every word. 
Every person starts at the bottom, you just have to be willing to try to climb the mountain to get to the peak of success.
It doesn't matter if you fall, it matters if you get back up and try again. 
Take a break if you need, but do not walk away.
Just be willing to try another time or another day.