Their thoughts and behavior are responsible for much of their fortune

From The Luck Factor by Richard Wiseman.

Over the years I have interviewed these volunteers, asked them to complete diaries, personality questionnaires, and intelligence tests, and invited them to my laboratory to participate in experiments. The findings have revealed that luck is not a magical ability or the result of random chance. Nor are people born lucky or unlucky. Instead, although lucky and unlucky people have almost no insight into the real causes of their good and bad luck, their thoughts and behavior are responsible for much of their fortune.

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.

Echoes of Hamlet, "For there is nothing either good or bad, but thinking makes it so."