Sometimes I just want it to end

Sometimes I just want it all to end. When I went to see a movie recently I was in a good mood before it started and during the previews before the movie there was some sort of commercial depicting a good relationship between a Father and Son which just depressed me and within a couple of hours I was feeling suicidal. I need to see a counselor soon if something as small as that is going to depress me. My father and I have not had a good relationship for several years and whenever I talk to him I hardly ever get to say anything because he just talks and talks which I know is just his way but it depresses me. I am a fly caught in a web that I cant get out of. I wish the spider would come and end it.