It is hoped that you can GET MOTIVATED by the piece either by hearing it on the sound clip, by playing through it, or by simply accepting the challenge.
Are you sure that you have chosen a piece that is WELL SUITED to your ability? If your keyboard skills are minimum, be sure that you have chosen one of the easiest pieces. If you prefer a greater challenge, choose one of the more difficult ones--but be sure you can finish it by your deadline.