The __, Self-Help Book About Positivity

This page is the CodyCross answer for the clue below from Cruise Ship, Group 648, Puzzle 4 (Arcade Games).

Question is: The __, Self-Help Book About Positivity

and the answer is: SECRET

Word Meaning:

SECRET — (countable) A piece of knowledge that is hidden and intended to be kept hidden.

Definitions from Wiktionary.

The __, self-help book about positivity — CodyCross Answer | CodyCross Solutions