To keep your composure even in the most adverse and drunken circumstance.

v. to successfully keep up with the psychological and physical demands of a drug habit, but to do no more than that.

To make a token phonecall or some other token effort to show your lady that you are always thinking of her whilst embarking on a 24 hour session.

A highly skilled Airman charged with the task of fixing what a pilot does to a perfectly good aircraft.

keeping your cool no matter what happens. used in keeping a certain way about you.

1. (v.) to be of sound mind; to have a situation under control.

To calm down
To chill
To relax