According to the pilot, after completing three takeoffs and landings at his destination airport he performed a simulated engine failure. Upon entered the landing phase of the flight he was excessively high above the runway surface. "Fixated" on completing the landing, the pilot flared the airplane too high which resulted in a hard landing and collapse of the nose gear, damage to the propeller, and damage to the aircraft structure. A post-accident examination of the wreckage revealed substantial damage to the firewall. The pilot reported no pre-accident mechanical malfunctions or anomalies that could have precluded normal operation. The pilot stated he could have prevented the accident by performing a go around.