The methods I use work straight towards your goal. Now, you are the one who has to move forward, which means that it will also depend on the speed at which you are able to move forward and your motivation and therefore your commitment. To give you an idea, many people deal with an eating disorder, or a cigarette addiction in 3 sessions. Others less and others more. As far as psychotherapy is concerned, it requires continuous work and in 1 to 2 years you can achieve beautiful changes.