Feeling Sad Forever

This continuous sense of sadness that abides within me is burning me dry.  I try to analyze the feeling and rationalize the reasons for the feeling.  I am not successful at either.  I spend an inordinate amount of time just trying not to feel.  That task is just about impossible.  Thus I internalize what I feel into a tight little kernel of thought and hide it the best that I can.  I feel combustible.  How does one deal with feelings without directly impacting the others within their surroundings.  Not sharing negative feelings seems to be an answer until trying to control those feelings results in not showing feelings at all.  That in itself is a negativity brought to the world around you.  This makes a person want to just bury themselves in a hole away from everything and everyone.  When trying to examine possible reasons for the sadness a person could come up with triggers and you would think that change was possible.  However upon trying to imagine a world without these so called triggers and the possibility that the sadness would be then be gone, one realizes that the sadness would only find new fuel.  The sadness is not a result of something. The sadness just exists in spite of everything.  The only hope is to try to be stronger than the sadness.  Right now it is winning.