I often get the question, why I am such a positive question and why I am most of the time happy.
For me, I try to always see the good side. And most of the time its pretty simple, if you are angry at something, just ask yourself, if it's still a problem tomorrow or in a week and if the answer is no, then stop complaining. It's stupid and a waste of time to be angry angry at small thinks or stuff that we could not change. Life is a circle and if you send out positive vibes, you get positive vibes back.
Nobody likes negative people, just a few nice words to the people around you and you can make someone else happy. Just say "nice to see you today" or you "look great today".
And if there is something that really has a negative impact of your life, change it. I know that sounds harder than it is, but not everything in life is easy, but life is so much better if you're happy.