Not a metaphor or life hack. Yesterday I literally joined a local, secular choir in my town. I will attach the "life hack" tag to this, though, because it is part of my general plan for reprogramming my entire life. I'm not suggesting everyone has to join a choir, because that is not everyone's interest, but it involves getting out and doing something with other people, a good use of time, music, and civic involvement, so it's got four things going for it.
Also, it seems somehow I am driven to involve myself in things my sister can no longer do. She was a choir director as well as being an organist.