topten
my sincere sympathy for your situation. Terrible as bereavement is, somehow we do seem to cope, however coping is just about getting by in some sort of zombie like state. When my brother suddenly died all I could do to get through was to keep concentrating on how lucky I had been to have had him in my life. Also giving and receiving love and support from family and talking about him, I was able to use family and later I sought counselling.
Also don't expect too much from yourself and give yourself as much care as you can