I'm tired of the depression

I'm really tired of always feeling like I'll never be happy. I just want to be happy with friends and family, but I can't. I don't know how to control it. Can someone really control depression? If so how? I've tried to control it for so long and now it's taking over of how i act and talk to my friends and family. I just wish it could end. But i know when people say that they want to commit suicide but not me. I just want the saddness to not be in my life, but it's in everyones life. I guess I should speak my feeling to someone but I don't know who to talk to about it.