Coping with Grief and Loss

Coping with Grief and Loss: Guide to Grieving and Bereavement: "Kübler-Ross proposed these stages of grief:

Denial: “This can’t be happening to me.”
Anger: “Why is this happening? Who is to blame?”
Bargaining: “Make this not happen, and in return I will ____.”
Depression: “I’m too sad to do anything.”
Acceptance: “I’m at peace with what is going to happen/has happened.”"

I think I just hit the 'depression' stage...I was hurting before, but now it seems at times like it is all too much to handle. I thought that I had been toughened with my mom's death and it wouldn't be possible to ever be able to hurt that bad again...but I was wrong. I miss my dad so much and I ache to hear his voice...