Well I've had both my parents, and several other freinds including ex girl friends pass away. all at different times in my life.
And sure i felt sad and guilty for a few months that i get to live while they miss out, but i always get over em. and get back to enjoin my life.
It's not really that bad loosin loved ones, they always stay in my memories. I sometimes even picture them being around at times and thinking what they would say and stuff.
But it's all cool, i still live life to the max.