Get the negative people and leeches up out of your life.  The misery of other people definitely has the potential to destroy you.  It could ruin your life. In fact, if you have enough negative interactions with people or even just spend enough time around a person that is negative to a high enough level, their misery can literally kill you. That’s what you have to watch both the people you choose to spend your time with, but also you have the be extremely cognizant of the content that you allow yourself to take in. You’ve got to watch the music that you listen to. You’ve got to watch the movies you watch. 

Who you hang around with is going to have the biggest influence on who you become in life. They say you become the sum of the five people you spend the most time around, so it should be imperative that you seriously curate the people you spend time with. You’ve got to spend time around high quality people if you want to live with a high quality life.  But the way to hang around high quality people is by becoming a high quality person yourself. The better person you become, the better you’re going to be able to attract people to you.