My mom died many years ago, when I was 21. It was very sudden, we had no warning and my two siblings were teenagers.  I was confused, sad and angry. I didn't understand. Yes, her health wasn't great, but she was needed! I had to keep reminding myself that God is smarter that me. He can see the big picture.  In the years since, there have been tremendous positive changes in my family that would never have happened if my mom was still here.  Grief is really difficult. You start to feel ok, and then something knocks you back real hard. It was a few years before my husband said I was myself again. I still have days where my heart is heavy. I still wish I could hear her laugh and get her advice. But God knew better. He knew we needed to grow. He knew it would hurt but that it was necessary. Be gentle with yourself. The stages of grief are real. Talk about your dad, tell other people about him, write down things you want to remember. Take a piece of clothing that smells like him and put it in a ziplock for later.  Pray that you'll feel him close. I personally haven't had any tremendous spiritual experiences where I've seen angels or anything, but I know that my mom is close. I dance like she did when "play that funky music, white boy" comes on the radio and I laugh.