When you think you got over it, you realize you have not and the pain comes again.
IGN: Sinon & Lost
Might this will sound cliche, but you don't know what you have with you until you lose it. Appreciate everything you have, you don't know when you'll lose it. Friends, family, pets, anything. The time goes and never comes back, hold on to them like there's no a tomorrow, becouse when they're gone it might hit you hard. And if you do a mistake, be sure to correct it, or else you can lose everything in just one second in front your eyes.