Good / Strong
sober - Serious and thoughtful in mood or behavior, not playful or exaggerated; or not under the influence of alcohol or drugs; clear-minded.

It was a year since he gave up drinking and had decided to remain sober all the time, and it took strength to just walk past the bar.
bootcamp - A type of physical training that consists of many different types of exercise; or a short course of intensive study designed to provide someone with new skills

Alice signed up for the 3 month computer bootcamp, that promised her a great job after she graduated.