“Every protagonist embarks on a journey that sends her both externally and internally into, as yet, undiscovered places. A writer does, too." - Martha Alderson
Don't you just love this? It’s almost Zen. When you set pen to paper, you also become the lead character in the ongoing tale of a writer’s life. You're on a voyage of discovery.
Like your characters, you'll run into obstacles. Writing is work, hard work. It's not for the faint of heart. It's a craft, and like any craft it takes practice, practice, practice. You have to keep going, even when you don't feel like it. (Especially when you don't feel like it.) You have to stay with it, even when the words you write are so far removed from the story in your head you suspect major brain damage. Even when you're convinced a roomful of monkeys could produce a story better than yours.
Need a break? Take it. Go back and look at some of your earlier work and congratulate yourself on how far you've progressed.
But don't stop. Trust that the path you're following will lead you to all the right places.