As suggested by the Huffington Post:

1. Exercise! Even walking around the block can help.
2. Limit time spent on Facebook. Too much time spent on Facebook monitoring other people’s lives can lead to an unconscious need to compare yourself to everyone else. This can develop into jealousy, insecurity, misplaced feelings of superiority or alternatively, feelings of inadequacy. And really, you don’t need to fill your brain with the mindless babble people post.
3. Stop living someone else’s life. When you are trying to please your parents, sibling, friends, or spouse, you are not doing your own thing or following your own wants. Your life is yours and you are the sole creator!
4. Write it out. Keeping a private diary can be a very effective way of dealing with mood disorders. Writing down our thoughts can be cathartic,  and if you write it down you have the strictest confidentially.
5. Stop comparing yourself to others. What if the person you are comparing yourself to, is basing their behavior off of someone else? You could be imitating someone you don’t know or would not like if you met. Don’t concern yourself needlessly with other people’s lifestyles.
6. Socialize. Symptoms of depression include feelings of being unloved, along with loneliness or isolation. Some people go days or weeks without speaking to people. Even speaking to the counter clerk or a positive encounter with a stranger can increase your mood, strengthening your connection to the outside world (decreasing isolation!).
7. Set goals. It doesn’t matter if it is a big or seemingly trivial goal, it just needs to be something that you can work towards daily. If you dedicate yourself to something that has personal significance to you, your life will have more direction and focus. Pick achievable goals that are easy to bite off and chew, and watch your mood lift over time.