Surprised no one mentioned this yet - go look up Myers-Briggs. It's a personality test that gives you a type indicator... very useful for entrepreneurs to know

Surprised no one mentioned this yet - go look up Myers-Briggs. It's a personality test that gives you a type indicator... very useful for entrepreneurs to know your type and your co-founder's type etc. It deals with extraversion/intraversion and also thinks like sensing vs. thinking.