I left someone after 22 years because of my feelings of inadequacy...jealousy....and just got sick and tired of being miserable everyday within myself.
I have zero self esteem and when I left the marriage....it was hard...but it was easier than having him around watching things he was doing that were hurting me.
I don't think she is being sensitive and loving and or caring about you ...the condition you are in right now....etc.

People staying for their "kids" which you may subconsciously be doing ALWAYS ends up in trickling down to actually harming the children....My children would tell you that. My children told me after I finally dissolved our marriage that they had WISHED that I did it long ago.

Your children are noticing you are not happy...this puts a heavy weight on your childrens hearts....If you are unable to "take care of yourself" and get out of this marriage (even if it is just for now)....than please find the strength to seperate for your children....Seperate...continue counseling...get out in the world and find people friends and/or women that make you SMILE.

Life is too short....