Richard Wiseman summarizes the findings presented in his book The Luck Factor for Skeptical Inquirer. This is, of course, pop psychology but I think it’s still pretty interesting:
My research revealed that lucky people generate their own good fortune via four basic principles. They are skilled at creating and noticing chance opportunities, make lucky decisions by listening to their intuition, create self-fulfilling prophesies via positive expectations, and adopt a resilient attitude that transforms bad luck into good.
[…]
But this is only part of the story when it comes to chance opportunities. Many of my lucky participants went to considerable lengths to introduce variety and change into their lives. Before making an important decision, one lucky participant would constantly alter his route to work. Another person described a special technique that he had developed to force him to meet different types of people. He had noticed that whenever he went to a party, he tended to talk to the same type of people. To help disrupt this routine, and make life more fun, he thinks of a color before he arrives at the party and then chooses to only speak to people wearing that color of clothing at the party! At some parties he only spoke to women in red, at another he chatted exclusively to men in black.
Full Story: Richard Wiseman (Google HTML).
(Thanks Trevor).