Answer:
What is it something that you always have but you always leave behind?
Slayer of regrets, old and new, sought by many, found by few.
To cross the water I'm the way, for water I'm above. I touch it not and, truth to say, I neither swim nor move.
I am believed to be only one dimensional, and tinier than anything can be, and there are many who say that I am the basis of all that we see. What am I?
When there is fire in me then I am still cold. When I own your true love’s face then you will not see me. To all things I give no more than I am given. In time I may have all things, and yet I can keep nothing.
What can you lose that will cause other people to lose theirs too?