There are many ways for you to stay in good spirits. First of all, you should always believe in yourself. When you feel depressed or stressed, you could talk to your friends often. Another good method to feel good is to find someone in need and help them out. Also, you may give yourself a big smile in a mirror when you get up in the morning, believing that it's going to be a wonderful day today. Last but not least, listening to uplifting music and exercising frequently will help you a lot too.