My main takeaway is that optimism and a good attitude attract luck. 

Luck also favors those who work to take advantage of opportunities. 

It is very interesting that luck actually has a statistical probability component to it - and one that can be changed. Anyone can improve their "probability for luck" by doing some simple yet powerful things. Nice! The ancients said it well many years ago: "Fortune favors the bold!"

I agree! Increasing your chances for luck is one of the earliest PandaWhale discussions:

http://pandawhale.com/post/375/make-your-own-luck

Note the concept of "luck surface area" on that page as a way to improve luck probability!

BELIEVING in luck can lead to luck.

"People who feel they are lucky are more charismatic. It felt good to be around them."

Here’s Richard Wiseman:

Through doing countless interviews with lucky and unlucky people I found you could tell within seconds which type of person you were about to interview. The lucky people were more engaging and upbeat. And emotions are contagious. After some time with a lucky person you feel good about yourself and you start to see the world in a very positive way. You spend time with an unlucky person and you start to focus on that back pain you’d almost forgotten about but now appears to be ten times worse. We have some research coming out which shows that one of the major factors is not how you yourself feel, but how you can make other people feel. It’s very closely related to charisma.

How to attract good luck:

1. Maximize Opportunities: Keep trying new things.
2. Listen To Hunches: Especially if it’s an area where you have some experience, trust your intuition.
3. Expect Good Fortune: Be an optimist. A little delusion can be good.
4. Turn Bad Luck Into Good: Don’t dwell on the bad. Look at the big picture.