Do you want to be happy? Most people say they do, but then sabotage their own happiness with ridiculous things. One of the most common things they do is surrounding themselves with miserable humans. Happiness is a choice.
Choosing who you hang out with, live with or spend time with is your choice. Yes, you have a choice. You choose who to have a relationship with, where you live, and where to work. The only humans you can not choose in your life are your parents, children and siblings. You can still choose to spend time with them or not.
Surround yourself with positive people who bring out the best in you and you will all be happier for it.