Definitely depends on your therapist's approach, the problems you want to work on, etc. If she has a solution-focused or behavioral approach, like CBT, and you are trying to work on a specific problem you are dealing with, such as managing anger, you could see improvements very quickly, within the first month or two. I will be in therapy for a while because I am dealing with a constellation of things. And I don't work on all one problem first -- I work on different problems as they come up in my week. So results take time in that case. It took three or four months before things started to get slightly better. This is working with a T who has a mindfulness-based behavioral approach (Acceptance and Commitment Therapy), which can be a short-term approach if working with a specific problem, but I expect to be in therapy for quite a while due to the type of problems I deal with. Other types of therapy (e.g., psychoanalysis) take longer.