Am drained mentality,I feel lost and I feel that t

Am drained mentality,I feel lost and I feel that the world is crashing on me,I keep trying to be my best,trying to improve but I remain a failure still.Every day passes me by,I feel ignored by the rest of the world,they think am un serious but am really trying my best to live a normal life am trying,they don’t know how I feel .sometimes I just want to start life afresh at even die and know that I don’t have to go through all this.can I get a therapist who can help because am really going crazy