So why does it take longer? If you take the feeling that is most prominent like anxiety or depression leading to why a person has sort help, it may have become a sort of default feeling. The negative feelings may have become part of who you are so removing it is not the same as removing a splinter. Think of the feeling you have most often, whether positive or negative, then think about various times you have had that feeling in the present or past. It suddenly can seem a lot of memories or ideas come to mind. One can start to see why it may take more than one session to change a feeling pattern.
Why do some people have therapy for years? Some people have had a lot of negative things occur in their childhood or adult relationships and some emotions can become frozen to the age they occurred. When the events and feelings are discussed they loosen which makes room for more positive events and feelings that are in the present. The relationship with the counsellor maybe the first time a person has felt trust because many people from their past were scary. People then have the ability to form new relationships, progress in work, go on new adventure or even take up new hobbies. Each person will need their own amount of counselling time, some do well with 6 sessions others progress with more which is ok as well.