Doors

You find yourself standing in front of these two doors. You are given a key that is sure to open the door on the left. You are told that going through that door would lead to a task with financial rewards.

However, you are drawn to the light coming out of the other door. You peep through the holes. Behind that door are stuff that you have been wishing for.

"If you want to check out the other door, you may use the same key to give it a try."

"But if you do, that key will no longer work for the left door and vice versa."

Would you go for that door on the right to follow your dreams, or would you go for a sure thing?