Act differently, and you will feel better.

"When you’re feeling down, it’s so tempting to focus on your sadness: you wonder why you’re sad, you hate that you’re sad, you wish you weren’t sad. It’s completely natural to do this. But it’s the wrong way to be. No matter how smart you are— you will never change a bad mood by thinking about it. You will only magnify it.
 Instead focus on your behavior. Focus on what you can change. Go outside. Exercise. Quit isolating yourself. Interact with friends and family. Accomplish things. Your mind will reward you with happiness.
It is so tough to change your behavior if you are feeling depressed. But it’s the only way. Don’t say: “I’ll act differently when I feel better.” Act differently, and you will feel better."

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