It's hard to be home -- I remember that so well. When you're away from home you can function but when you get home, your spouse should be there. I did everything I could to keep busy and away from home.
One thing I did do was throw out everything that made me think of the cancer - it was good therapy to toss x-rays, meds, water bottle he took to chemo etc. and it worked out a lot of anger.
I changed things around to make the space a little different and planned some remodeling projects -- just trying to make the time pass and the house a little different then when we shared it.
I was fortunate to have some friends that helped me - ironically one that lost her husband shortly after John passed away.
I posted a book recommendation in the Grieving Forum - it helps to read how others have handled their grief and what's normal and what's not. Writing in a journal helped tremendously so it's good you're writing your story.
It's hard -- really hard -- but usually after those bad emotional days you have a good one. It helps to let it out. Many of us get what you're going through and we're here to help.
Rochelle