If you feel that you need that extra bit of encouragement and motivation to change, then why not train with your friends. Group training is a great way to help achieve your goals whilst doing it in a social, fun environment.
Group sessions are structured so that each persons goals can be achieved whilst also being inclusive of everyones individual needs. These sessions are normally given in a circuit style format to keep the tempo high and the workouts fun!
Group sessions also allow you to get all the benefits of a Personal Trainer but at a discounted rate, as the more members in the group the less each member pays per session.