The last farewell, missing some people's lives, is meaningless and unwilling to live.

Don't be silly. I used to have depression like you, and I always wanted to commit suicide. But now I have recovered through exercise and treatment. It's okay. You will recover, too. Even if there is no firewood, as long as you live, there is hope for tomorrow. If you die, there is no chance to turn over. Moreover, people who love you will be sad all their lives, while people who don't like you will be happy. Are you really willing to do this? The day after tomorrow is beautiful, so don't die today or tomorrow.