You should have a dream, but dreams are very low probability by definition. You should also have a plan. Have a dream and a plan. If a dream is less than 1% chance of accomplishing it, a plan is greater than 80% chance of accomplishing it.
-Steve Young’s dad
Good advice from Steve Young’s dad. Steve dreamed of being an NFL player, but he also had a backup plan to be a lawyer if that fell through. He actually went to law school while he was in the NFL.

