Stubbornness

If it doesn’t pay off the first time forget it.

Perseverance is a good idea for spiders and kings, but not always for speculators. Don’t fall into the trap of trying to squeeze a gain out of any single speculative entity.
Don’t chase any investment in a spirit of stubbornness. Reject any thought that an investment “owes you” something. And don’t buy the alluring, but fallacious idea that you can improve a bad situation by averaging down.