So you know that you are depressed, that is a step in the right direction- to realize that. But understand, the more you dwell on that, the more you tell yourself "I'm depressed" the more depressed you will be, and it will be a vicious cycle. You are keeping your mind in a dark place and feeding it.

Try telling yourself things like "I'm going to make sure that today is a good day." Or "I feel as though I am getting better." You sound like you are new to depression, don't let it take over you life. The most important thing that I have ever learned is that the only person who can cure your depression is you. Medicine may be necessary sometimes. But it does not allow you to learn how to pull yourself out of depression, it simply numbs you so that you do not feel it.

My advice to you is to try to fake being happy. It sounds awful and it will feel very odd and fake, of course. But after a while, it won't be faking it anymore. Of course, write down your feelings or get out whatever is bringing you down, but when you are around people, put on a smile, laugh, crack jokes, and make yourself happy! Good luck, all the best. *hugs*