(What Is) My Problem Exactly

I do think I have a problem. I have a problem. I'm not sure what it is but signs to point to depression like syndrome. I can be easily irritated at times, and my moods over the past few months is a roller coaster ride. Whenever I am at the bottom of mood-o-meter, I shut myself out. I have jeopardized relationship and friendship due to this thing that I think have troubled me for quite a period of time. I cannot pinpoint the exact period. Maybe, I need an outlet to express what I've been feeling. Probably not seeking professional help. Probably not. I do need to have it under control. If not I wouldn't be able to start a healthy family life of my own. And I would really love to.