How long did it take you to decide to sell your car

It is not the decision to sell the car now it is the anguish that you may feel a year or two from now when you realize that you really loved that car and post a "Looking for my old Scamp" ad.

On the other had if you just hate the car get rid of it.

On the other other hand if you are not enjoying it give or sell it to someone who will love it rather than have it rust to uselessness.