It is hard for a lot of people to find happiness, and in their sorrow and misery they bring you down. You have heard the phrase "misery loves company" right?
Being around happy people can brighten your mood, and the same goes for being around miserable people.
If you surround yourself with people who truly care about you, there will almost always be someone to help pick you up and be there for you when you need it. You just need to find the right people :) ~Ninja Jackie-san
It happens that when you're happy someone has to bring you down and when you're down no one is there to pick you up because it is a rule of nature. If another person brings you down when you are happy, the person becomes happier than before. Emotions of happiness and sadness just balance out.
People usually try to bring others down out of jealousy. I had this person try to destroy me because he knew I was a happy person who worked and had everything I wanted. I found out that he was working diligently to plot against me when I was trying to help him after he was evicted. He would try to call me mean names, distort my image to people he knew, make up lies about me and even trued to slander my reputation. Like the saying goes, misery loves company and I found out tat this was a very unhappy person.