Check the moments that taked your breath away, try to remember them, try to recreate in your mind what were you doing, who was with you, in what place was, what changed in you. The person before and after that single day. Feel the mood you had...
It is very common, almost a cliché, think in our lifes like train stations, stages, phases, but the real thing is, have you ever try to do it? To put on paper your own life? Imagine someone important to you, that you know, maybe is a friend of you, even your partner. That person will have her/his own scheme as well, and in some station you will converge to keep going together, maybe. The nice thing is that you can go back and forth between some stations, but you will be older each time, and the feelings will be different. And most of the time, it is better not to go back.
The way I propose to do it is to put the locations that you consider had the most important relevance in your life so far, and add the thing that happened.
Take some of your time to do it and probably you will see better what to do next from now on. Life is a sigh and when you expect less, will be dying. Let do our best to squeeze the better of what we have left. Do something different to obtain different results.
Have a nice day! :D