Suicidal thoughts while living

I dunno, for the last 3 months I didn't done anything.I literally sitting at home and do nothing, because every day I think about suicide , so why do something if you will suicide either way, but then again I don't think I will ever be so brave to do that. Anyone have some advices how to do something , not think this way? Or I should post this on r/SuicideWatch?