Why trick yourself?

Actually put yourself a situation where you DO NEED to make that money.

Get into debt with some mobsters.
Quit your job.
Burn some un-necessary bridges.

I wouldn't necessarily suggest that, but if you are talking about desperate.

Desperation is the best motivation.
I've put myself into some dire DO OR DIE situations, It worked-but it was scary as fuck...

Or, Try some NLP. Its some good shit.

I HIGHLY recommend this book:

"NLP: The New Technology Of Achievement"
by NLP Comprehensive, Steve Andreas, and Charles Faulkner

That will get you going