"Courage doesn't always roar. Sometimes it's the little voice at the end of the day that says I'll try again tomorrow." (all credits to the appropriate owner, whoever they may be).

The greatest bit of 'self-help' that I've ever come across is writing, "I tried today, and I'll succeed tomorrow" into a journal everyday. Such things are different for everyone though, so experiment and make your own medicine:)

Shut up,

Stand up,

And smile.

Stake a bet,

Break two sweats,

And make a gun for gold.

Shape up,

Break up,

And be brave.

Be yourself,

Not someone else,

Be yourself,

Not a quiet little mouse.

Be yourself,

Be yourself,

Be yourself.