The point is to reestalish what has been lost, not to acquire anything new. This is the purpose of developent. For this one must learn to discriminate between essence and personality, and to separate them. When you have learned to do this you will see what to change and how. Meantime, you have only one possibility - to study.
Views from the Real World
Early Talks of Gurdjieff as Recollected by His Pupils