"Success is not an accident. Success is actually a choice. Are the habits you have today on par with the dreams you have of tomorrow?"-Alan Stein 

What this quote is trying to say is that success doesn't appeared out of nowhere, you worked for it. For example students who study most likely got a good grade on their quiz. People who try to lose weight by going on a diet and exercising, probably lost a lot of weight by the end of the month. People who want to get more buff by doing weight lifting, probably got more stronger muscles. People want to get into college will try to work hard in school, and they might get into college.