I do things I have never done before

I just walked out at work when it got too much. Would never ever have been courageous enough to do that before. And I did not even feel bad about it. I get more and more upset about things that are not good for me and as much as I just oversaw it before or just tried to cope with it with my logic the more I see them now and I really overreact. My Emotions and my logic seem to be totally out of balance. But maybe I just start to react normally? Who knows? But I am not comfortable with it and seem to lose sense. Or more all this does not make sense to me.
I can remember there was a chapter in “The courage to heal” about being very emotional when you start to let your defences down and all those emotions long hidden or buried start to come out. I am at this point obviously but how can  I deal with it?
They also said that there might be a point when everything seems to break down. You lose your job or search for a new one, you lose friends and family because you act strange and you lose behaviours as well because you do not put up with the negative patterns in your life any more. It is a stage of chaos and it feels horrible but it is a sign of great healing. Well why does it have to be so hard???????