There was a story about a man who stayed in NYC with a friend. The friend had a one bedroom apartment and was doing pretty well. The visitor always worked long days in his field, but had trouble staying up at night to finish projects at home.
One day the visitor came into the house and had a long conversation with his friend about where he wanted to take his career. Suddenly the friend told the visitor he thought he saw a mouse on the floor run behind the couch.
The visitor immediately got up and checked for himself. Sure enough the visitor was startled and jumped back in shock. The visitor packed up his laptop and went to the local 24hr coffee shop, stayed up 2 days in a row and never had a problem with staying up late again.