Duration of the sessions will vary depends on the individual health condition. There may not be drastic changes in first 1 or 2 sitting.
A session is an hour long. In the beginning of 1st session Counselors, Psychologist or Psychotherapist will make entire case study of individual and actual requirement of the client. Once this is completed he will work out clear procedure of the therapy and guided to set the exact goal for the entire Course of Counselling process. If the individual is major they can attend counselling freely. In case if he/she is minor below age of 18, has to obtain approval from parents.
One can see the changes; feel the improvement based on how individual implement the suggestions given during the session. Counselling gives you guidelines and suggestions but to see the actual changes, you have to adopt the advises properly in your daily life. Treatment would be decided upon on need basis. A minimum of 3 to 4 sessions would be required to make progress. Sometimes one may need 7-8 sittings to achieve the target and in few chronic cases even more.