Because each person has different issues and goals for therapy, therapy will be different depending on the individual. In general, you can expect to discuss the current events happening in your life, your personal history relevant to your issue, and report progress (or any new insights gained) from the previous therapy session.
Depending on your specific needs, therapy can be short-term, for a specific issue, or longer-term to deal with more difficult patterns or your desire for more personal development. Either way, it is most common to schedule regular sessions with your therapist.
It is important to understand that you will get more results from therapy if you actively participate in the process. The ultimate purpose of therapy is to help you bring what you learn in session back into your life. Therefore, beyond the work you do in therapy sessions, your therapist may suggest some things you can do outside of therapy to support your process, such as reading a pertinent book, journaling on specific topics, noting particular behaviors, or taking action on your goals.
People seeking psychotherapy are ready to make positive changes in their lives, are open to new perspectives, and take responsibility for their lives.