I've long been of the opinion that "luck" isn't random. In my experience, luck is capitalizing on opportunities that come along, instead of ignoring them.
Imagine my vindication when I lucked onto an article by Richard Wiseman, who conducted actual scientific research on luck. As you might guess, he could find no supernatural agency at work. Quite the opposite.
Lucky people generate their own good fortune via four basic principles.
1) Lucky people are skilled at creating and noticing chance opportunities
2) Lucky people make lucky decisions by listening to their intuition
3) Lucky people create self-fulfilling prophesies via positive expectations
4) Lucky people adopt a resilient attitude that transforms bad luck into good.
And guess what--whether you already consider yourself a lucky person, or you think of yourself as unlucky, you can actively improve your luck by concentrating on one or more of these principles, as described in various exercises in Wiseman's article. Give it a shot, and see what happens. Who knows, maybe you'll get lucky.
Article: The Luck Factor