First of all, I am sorry for your loss and there are no words that can be said to remove your pain.
Dealing with the grief is necessary. I used GriefShare which is a multi-week religious based process and was very helpful. I might have realized more benefit if I was a member of the church. I might have liked a traditional group setting away from a church because the visual church setting became a negative visual reminder. Taking time to journal your grief will always be helpful.