I remember the time when I was doing Chinese Literature... there was this short passage on this guy called Wang Ziyou.
There was once when he had nothing in the middle of the night... he decided to go pay his friend a visit.
After a long journey to his friend's place (which was pretty far away), he arrived at the doorway of that friend's house but then he decided to go off without entering the house.
When asked for the reason of his action (which may look rather stupid to others), he simply said that he set off for his friend's place because he felt like doing it, but after the arrival at his friend's place he didn't feel like going in anymore.
I guess I'm that kind of person as well.