The pilot selected a 340 metre long taxiway as the take-off path. After a ground roll of about 250 metres, at an indicated airspeed of approximately 55 knots, the pilot rotated the aircraft and it became airborne, but did not climb away. He then closed the throttle and the aircraft collided with several trees before coming to rest. The pilot was unfamiliar with the airfield but had been advised that the strip was 915 metres long. He was unaware that the take-off path he had selected was along the taxiway which led to the strip. Prior to the attempted take-off, he had been involved in an argument with his employer and was probably also fatigued after a week of extensive business travel.