I'm so sorry. I read your grief but I like that you have so many sweet memories of him, that you go through a tough day and can know for certainty that he would have made it easier to handle. That's a gift.
Do you not want to go out with your friends anymore because they know? Sometimes it helps to be anonymous, you know? Is there a place you can go where no one knows you, where you can help out for a day? Maybe a place to volunteer? It's freeing sometimes to be around people who aren't aware of your pain. It's that way for me, at least.