It is much better to live in poverty and graduate to the middle class, than it is to live as a king and be demoted to the middle class.
~ Mustafa Said
The term I despise most is motivation. Motivation is an unreliable tease and isn't worth your time. Motivation is fleeting, DISCIPLINE is reliable. Cultivate DISCIPLINE and FORCE yourself to do things to better yourself. It isn't about keeping yourself motivated, it's about how to train yourself to work without it.
Life is just a big game of Texas hold'em, unexpected things may arise that may suite you or destroy you. You gotta make the best of the cards your dealt, adjust accordingly, and always understand that you control your decisions.