It helps. Even though I'm dead, there's still a lot I can be happy about and I focus on that. I like thinking about it like that, though I feel a little more like snow myself. Like I just float down and land on all the people I love and they're never without me. I've been dead for about a year now. It's hard to keep track of time, but I think celebrating birthdays would help! You'll get used to it pretty quick, I think! But I can help, too.
It's not trouble to celebrate it. I think it's important to celebrate your life and find some of the nice things you liked about it! I died when I was 32 but I don't really feel 32. I think you can be any age as a ghost! I saw my dad look young when he died and I think I can do it too. Have you tried it?