The term self adequacy means that you view yourself as capable of satisfactorily dealing with problems.

you are dum very dum

Yes

There are many different kinds self help books. There are books about religion, love, life and dealing with death. Most of the books are by renowned authors.

The problem that everyone in "Little Miss Sunshine" is dealing with, is actually self-esteem or self-worth. Grandpa Hoover is into pornography (which is considered by some a self-worth issue), dad Richard Hoover lacks confidence in his career as a pitchman (salesman, just the opposite of what a salesman needs), Dwayne the brother is a teen dealing with his value generally (and you'll remember doesn't speak until he finds that his value is in protecting his sister), mom Sheryl is dealing with whether she's a good enough and supportive mom, and of course Olive is dealing with thinking that only if she's a pageant contestent is she pretty and of value -- and she is purposely made to look "dumpy" to boot. At least that's my take on it.