I cannot agree with "Always look at those worse off than you". In terms of Envy/Jealousy may be YES. But constantly looking only "at those worse off than you" will lead to self-complacency, and ultimately to the inhibition of self-improvement, self-development and achieving personal goals. Sure, why to improve yourself, if there is someone who is worse than you?
to have some envy isn't bad, but in a good way.. envy should be "productive".. I always say: if he/she can do it/have it/accomplish it, I also CAN.. and nothing can stop me...