Answer:
Three lives have I. Gentle enough to soothe the skin. Light enough to caress the sky. Hard enough to crack rocks.
Useful tool for who in darkness dwell. Within you, corrupting like a deadly spell.
They belong to me; they belong to you; They can make you feel happy or make you feel blue; They never end until the day you do.
Steals an event or even a mood. Reveals the truth or shatters it.
I move without wings, Between silken string, I leave as you find, My substance behind.
What do angels sing in the shower?
Difficult
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?