I think therapy can be very beneficial but it is intense work that requires us to be balanced, and to be able to "contain" much of the therapy work between sessions so that we can focus on our jobs, families, and do life. Maybe instead of quitting therapy, you can limit the amount of time you spend thinking about/analyzing what's coming up for you in therapy. Can you compartmentalize a bit, opening up to therapy during your session time and then when it's over, containing what's left over and refocusing on your daily life?