Question

Riddle!

For what it's worth, its worth is less. Overdo, you'll make a mess. Three of its words can help you write. Other three make a sense with ice.
It's a thing you'll never forget, and if you forget, you'll regret.

Answer 1

I guess the answer's pencil.

The first three- pen helps you to write.

The last three- cil, sounds like chill, a word related to ice.

I really don't understand what you mean by 'overdo'...

:)