Twenty One Pilots - Time to Say Goodbye Lyrics Meaning

Probably ToPs most suicidal song. Tyler is talking about looking in a mirror and just seeing nothing meaningful, this description has a strong tone of self-hate.
He seems to enjoy the fact, that Somebody else is hurting him and feels some kind of closeness to this person.
He says goodbye to this earth and everything he has ever created, because he is not able to see any worth in this.
But now, when everything is over, he enjoys even little thing in life and but he is also yearning for the peace which lies in the life after death and is hoping that he will be free elsewhere.
Than Tyler is describing that fights he had fought and how he lost these fights. Which made his decisions of a suicide clearer.