Becoming Dick is a 2000 comedy movie-made-for-television starring Harland Williams and directed by Bob Saget.
Richard Breggs (Harland Williams) is a struggling actor living in an apartment with his girlfriend.
After a conversation with a friend, Richard decides that he is too much of a "nice guy" and that the key to success is to act like a jerk.
It is four years later, but Richard doesn't remember anything that has happened in the elapsed time, due to an accidental bump on the head that gave him amnesia.
Richard (now known as Dick) realizes that while his new personality gave him success, it also caused him to lose his girlfriend and best friend.