The Guardian has a great article analysing George Bush's personality.
Extract:
"As the alcoholic George Bush approached his 40th birthday in 1986, he had achieved nothing he could call his own. He was all too aware that none of his educational and professional accomplishments would have occured without his father. He felt so low that he did not care if he lived or died. Taking a friend out for a flight in a Cessna aeroplane, it only became apparent he had not flown one before when they nearly crashed on take-off. Narrowly avoiding stalling a few times, they crash-landed and the friend breathed a sigh of relief - only for Bush to rev up the engine and take off again."