So sorry about your loss. I agree with all who are saying to take gentle steps and have a good friend around to support you.
When my first husband died (thirteen years ago), my mum said a very wise thing to me: "You'll be grieving for a while, but grieving is important. Know that there's a shift after six weeks, and another after three months... and another after a year." I didn't believe her at the time, but found it very true.
I went through his and our things step by step - some objects felt easy, even important to let go; others I boxed for sorting through later. I'd get a box or two out each time I felt it was good top take another step. It helped me honour my feelings and memories, in my own time. Having a friend present for one of the hardest steps (for me, going through a box full of photos deciding what to let go and what to keep) was a lifesaver to me: I could share feelings and snatches of story as they came up.
Good luck, and love to you! Going through things at a gentle pace can bring you unexpected treasures and healing.