The Man With A Thousand Names A. E. van Vogt 1975
The main character is Steven Masters, a spoiled 23-year-old who happens to be the only son of the world's richest man. At a party he (while drunk) states that he wishes to go on a proposed space flight to a distant life bearing planet called Mittend.
Mittend is 30 light years from Earth and is the closest life bearing planet. When he is told that he does not qualify, he gets indignant and sets upon a campaign to join in the expedition. Using his father's money he is able to get passage.
Six weeks later he arrives on the planet. It turns out to be very similar to Earth, with a breathable atmosphere.