What emotions do the lyrics express in this life?

Half my life has passed, and I have to live for myself for the rest of my life. I understand a lot at this age. Nothing belongs to you, only you belong to you. Therefore, it is the most successful way to look down on past grievances, ignore them, manage yourself with a calm mind, and not increase the burden on children. Come on! They are all peers who have lived for half their lives.