The 5 of Cups is about overcoming sadness and disappointment. You've let go of your old securities to embrace the new and exciting, now something has gone awry and you feel bad about that. But don't forget to notice those things that did go right.
Dare to make the balance, of exactly what went wrong, and what is still standing. Take comfort in what remains right, and try to fix what went wrong in due time.
Despite your immediate desires getting no satisfaction, you still have assets that can help you along the way to your dreams. Try not to get stuck with bad feelings, and don't dwell on the bad in your life. Try to face it.
Don't fear failure too much. You might in fact not even fail at all.