Do what you enjoy. (For me it's play MC).
If you play MC build a shrine to them and join that world daily until you recover (How I felt better after the loss of Techno) you will know you have recovered when you don't play in that world for more than one day in a row.
Talk to friends and family
Try and think of other things.
I am going to really sugar coat something for you now. They are probably in a better place now.
Sorry for your loss