[mindcrime]

You might accuse me of being glib in saying this, but this scene from the movie The Gambler[1] contains a lot of wisdom. The movie as a whole is moderately OK, but this scene really distills a lot of good stuff into a few minutes.

https://www.youtube.com/watch?v=rJjKP8vYjpQ

[1]: https://en.wikipedia.org/wiki/The_Gambler_(2014_film)