Extraordinarily smart people have more in common than you might think. Smart people are persistent, they set goals, they are avid readers, they are self-disciplined, and they think about thinking (metacognition). People tend to know most of these good habits of smart people but overlook the bad habits that they share.
Smart people tend to drink, use drugs, are night owls, and are anxious. Having high intelligence is not always a walk in the park; these people tend to live the most difficult yet rewarding lives. Purposefully exhibiting many of these traits will not make you smarter, they are simply uncontrollable tendencies of intelligent people.