"I want to be happy"

may be Christian shorthand for

"I want to know the One, and the only One,

who is in Himself all I have

ever longed for in all my desires

to be happy."

-- John Piper in When I Don't Desire God.

God is glorified in His people 

by the way we experience Him,

not merely by the way we think about Him.

Indeed the devil thinks more true thought about God

in one day than a saint does in a lifetime,

and God is not honoured by it.

-- John Piper in When I Don't Desire God.