Hi Stung. Glad you found the forum. From your post I don't know too much about your sitch but your pain reads loud and clear so I am glad you are here for support.
A positive mental attitude can be tough, especially in the beginning of situations that may involve the discovery of an affair or a spouse walking away. I don't know if any of that applies to you but in trying to keep my own PMA, the only way for me to do it is to focus on myself and not my WASpouse.
If you take care of yourself, you will feel a little better every day.
Me(F):40 WAW:44 T:13yrs M:9yrs BD:2/12 (I saw a text) ILYBINILWY: 5/12 PA admission: 12/12 (began 3/11) S:2/13 Moves in w/AP D begins: 7/13 W moves home to R: 10/13