How do I stop feeling so negative?

I'm not too negative, but I have my moments. But it seems like everywhere you turn in life, you're in some sort of negative situation. You either feel sick, are in pain, rejected, struggling with money, feeling not good enough, are insulted, fighting with a loved one, are in some sort of drama with friends, the list goes on. It really upsets me. How do I stop feeling so negative? I'm sorry if I sound like such a debbie-downer :/