At least two-thirds of our miseries spring from human stupidity, human malice and those great motivators and justifiers of malice and stupidity: idealism, dogmatism and proselytizing zeal on behalf of religous or political ideas.
Envy can be a positive motivator. Let it inspire you to work harder for what you want.
Would you like to know your future? If your answer is yes, think again. Not knowing is the greatest life motivator. So enjoy, endure, survive each moment as it comes to you in its proper sequence -- a surprise.
Look at what your idea of success would be. The more that you take in external motivators, the more it reduces your ultimate satisfaction because it doesn't come from inside.