I'm so sorry for your loss. As far as the job goes, it sounds like it's a separate issue since you still enjoy other things. Have you considered looking for a different job in your field? It might help to check into the available resources you have at work as well. I'm glad you have friends to confide in also, it really helps to have someone to talk to about what's going on. I'm sure they would love to help in any way they can so talk with them. Keep hope.