Magic
About two decades ago, I was doing something v difficult and, one evening when things seemed most difficult, I got a blast of energy from my future that sustained me and got me through the rough time. It taught me more than I can say about sending magic backwards and forwards in time, something that I've been doing ever since.
And, last night, I lived the night that generated that blast of energy and knew that I was sending it to my not-yet-40-year-old-self on that long night in the past. Turns out that, when it came time to send that energy back, it was the easiest thing in the world to do. It's all good.
Picture found here.