I have to confess, I did stuff like this after my husband's first affair about 11 years ago (the "post-baby affair"). I was what I would call a crazed nut for about 3 years, and I still had occassional outbursts over the last 10 years.
I don't know if it's the divorce that helped this time, the fact I've gone through it before, the best GALing summer of my life, maturity (being older but looking HOT), or the 10mg of celexa the doctor prescribed for me, but I feel completely different this time (following the MLC affair!). I feel really positive about myself, my life, my husband, my family. I can't say I've been 100% positive all the time, but those lows are no where near as low as they used to be, and I'm not reacting like a nut anymore. It's REALLY NICE!!!!
My suggestion.... I'd say give individual counciling a try and if you still have severe ups and downs after time has passed (6 months, or a year) consider trying low dose antidepressants. I don't like to recommend meds since I don't personally like them, but they can be tremendously helpful in really difficult times.
There is no arriving, ever. It is all a continual becoming.