It seems a mistake to see these as tarot cards or the I Ching, etc. They are a way to short circuit paralysis due to over-thinking.

I wrote a little Python script to return a random one to stdout... too trivial to even post.

I like the reference to Bowie's "Heros" album in particular the song "Sense of Doubt" which is a great instrumental. I love that album and that song.

These are useful little aphorisms for when you are stuck. This article has a little background.