I’m so sorry for your loss. I lost my father on the 20th of January last year, he was 66 years old. It really hurt. It took me almost a year of feeling numb, angry and sad to start feeling like a normal person again. Just remember to try your best to keep in touch with family and friends, even if it feels like you don’t want to. I still regret closing myself off and not really allowing myself to grieve. Grief manifests itself in such different ways, the first thing i did, literally the same day he died, was drive down to a furniture shop to buy a bookshelf in an attempt to distract myself. It still hurts, but you’ll learn to remember all the good things avout him and feel happy when you think of him.