I've rarely wanted to go back in time, relive some fabulous aspect of my life, my past. I don't know what that says about me--probably that my memory is as lousy as I suspect it is. Or maybe it says that I spend much of my time thinking forward (true, and not a great habit either). And that's not to say I don't wish I could go back and do things differently, make some different choices here and there, or that I haven't had some magical, incredible moments that I wouldn't mind dropping in on, being more present for, either. Good goddess, that power would be fabulous--but I don't dwell on the impossible. Or, rather, I *try* not to dwell on the impossible.
That being said, I don't think we have to forget our past, relive our past, or even understand our past--not in an analytical way, not in a way that requires enormous amounts of mental energy. Yes, it's important to know where you want to go, and yes it's important to understand yourself and your habits enough to be aware of when you've switched to autopilot, in danger of slipping into patterns that have led you astray in the past. But I don't think that has to be a painful process, a tedious process, or even a long process. I think we can just assess who and where and what we are right now. Then assess who and what and where we want to go, then put one foot in front of the other.
When we get lazy, when we drift, our feet will tell us. In my case, I don't usually realize it until I've tripped on a root and landed face-first in the dirt. That's all right. I remember. I assess. And I just keep moving.