Kick your own ass, and say "I'm not scared, I'm not a wussy, I'm not a loser" EVERYTIME before you sarge. Right up until you actually believe what you are saying.
How do you motivate yourself?
PUSH yourself, inspire yourself from within to at least TRY!
Affectual motivation is the most primitive AND effective way to motivate yourself. Do a few searches on google for it, (if you still want to read), and just think of how it is going to fit into a goal...
You have made a realistic goal haven't you?
You've got to break from safety, and let your emotions chase you along, rest for a while, and get back to running from your emotions. Stay one step ahead of them, PLAN to have the emotions...
That's generic speak, If I could read your mind I'd help you out...