Meaning of As Good As Done-finished in every practical or completely done

As Good As Done-finished in every practical,almost completely done-

This task is as good as done, so I'm going home for rest

Meaning of Good For Nothing

Good For Nothing

-something or someone that is lazy and not helpful or useful

-This  old calculator is good for nothing!

Meaning of From Now On

From Now On-starting today and continuing into the future

 I'll take my responsibilities more seriously from now on.

Meaning of By The Seat Of One's Pants

By The Seat Of One's Pants-without a clear plan or direction

-I know my teachers think that I'm just flying by the seat of my pants ever since I left my course without completing it

Meaning of Guilty Pleasure

Guilty Pleasure-something that one enjoys or finds pleasurable but knows or feels to be bad,  especially as might be perceived or judged by other people-

I know these books are not good, but reading them on my commute home is my guilty pleasure!

Meaning of One's Eyeballs

Up To One's Eyeballs-extremely busy, deeply involved or engrossed in or with something-

Tom has been up to his eyes with his studies lately.

Meaning of Ahead Of

Meaning of Ahead Of (or Behind) The Curve-ahead of (or lagging behind) current thinking or trends-

He was ahead of the curve in the  beginning when he started his business