Answer:
There are several different kinds, but the one you pick doesn't do its job. What is it?
Three lives have I. Gentle enough to soothe the skin. Light enough to caress the sky. Hard enough to crack rocks.
Slayer of regrets, old and new, sought by many, found by few.
The more of them you take, the more you leave behind. What are they?
A tree with 5 branches, no leaves and no fruits
I am your mother's brother's only brother in law. Who am I?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?