One important thing I’ve needed to learn is that in order to be successful you cannot nurse grudges. Many people have really been dishonest or unethical in working with me and sometimes I’ll fantasize about all sorts of outlandish destruction for them. However, time spent on that sort of thing is almost always a waste of emotional energy. Steve Jobs, Warren Buffett, and Bill Gates all say the most important key to success is focus. Focus means shutting out the haters and scumbags. Keep your eye on the end goal and the journey required to get there.