self-improver

noun

self-im·prov·er ˌself-im-ˈprü-vər

plural self-improvers

: a person who engages in self-improvement

I love women's magazines that offer five-step solutions to all of life's problems. … As a veteran self-improver, I find articles like these almost irresistible.—

Kate Hilton

The best feature story of the weekend was a Wall Street Journal profile of Max Deutsch, 24, a San Francisco entrepreneur and serial self-improver who sets improbable goals (like learning Hebrew, solving a Rubik's Cube in 17 seconds, memorizing a deck of cards in two minutes, developing perfect pitch), gives himself a very short period (about a month) to attain them and, by and large, succeeds.—

James Warren