If you are asking about how to go on after a long term marriage then you first have to want to move on. If you really want him back then you can't move on. It is obvious that he has not treated you well. That's impossible if someone cheats 6 times. You have to ask today why you would want someone back who does that. If it is familiarity then you really need to process this in therapy and reconsider your choices. You need to evaluate why you want this relationship. You don't deserve to be cheated on. Find therapist to help you with the end of a relationship, the difficulties in being alone and the sadness. Let them help you move on. You are not making good choices. Learn to raise your children without this relationship. Work out your confusion. Learn to have confidence in yourself again. Only then can you be strong in other areas.
Find a psychologist or therapist today. Learn to be the strong woman that you could be. Remind yourself of what he did and you will miss him less