A Moment

Pick a moment in time, any moment, and go back there.  Would you change something, would you just relive it again?

If I could turn back time, I'd spend it all with you. I tell you that I love you and you would stay.

Is that the moment you picked?

Is there someone that you love that you wish you could see again?

These moments are special markers in time.  Because all reality is just congealed moments of consciousness, the special moments that you keep coming back to are the pivotal moments in your life.

Books have been written about these moments, sometimes with alternate endings, sometimes just a straight retelling.  Science has written about these moments, calling them the building blocks of time, and explaining that all time is actually just blocks or moments that fit together and do not have to necessarily fit in the same order.

Yes, that's mind-boggling but if you remember that it's all mind and you know how easily you can change things up in your mind, then you understand how this works.

Pick a moment, the moment you love, or the moments that makes you cringe.  These are special markers that bring you back in time.

The time travelers use these moments.