Dear Sir, Please accept my deepest condolences for the loss of your beloved wife. This is so very difficult and I am so very sorry. Please do e ever let anyone tell you how to feel. It is a very personal trial, for you alone. Maybe it helps to know she is at peace now.
When my spouse passed, the mortuary put me on a daily grief support email list, which helped me. If you have a trusted pastor or elder in your church, this might be an idea. Or maybe you can let your doctor know how very hard this is for you. May her memory always be a blessing to you Sir.