It could encompass a day, a month, a few years. Besides the birth of your kids if you have any......I want you to go back in your mind and focus on The Happiest Times In Your Whole Life.
It's like a reel in my head...fast forward, pause, continue on, reverse, pause, think about it, either shrug it off with a bad memory popping up ruining it or making note to visit that time later, fast forwarding again.