Webster's says that “luck" is “a strength or energy brought to bear that brings good fortune or adversity.” The implication being that luck is something that exists who-knows-where. And that this nebulous something can completely negate all  your effort. Or your lack of effort. 

It's the perfect scapegoat. No matter what goes wrong, you can always blame it on bad luck. 

And if you trust to good luck to get you what you want in life, you're trusting in something that has about as much reality as a leprechaun or the tooth fairy. And about as much reliability. 

Napoleon understood all this. When asked about where his opportunities came from,  he said he made them. Cervantes observed that bad luck seldom comes alone. And there's an old Persian proverb that luck is infatuated with those who are efficient. 

So what is called luck really has nothing to do with anything. 

Having said all that let me now offer you a something that has infinitely more to do with what happens to you in life than luck. And it's a something over which you have total control. That something is expectation. 

You see, what you expect will happen to you actually determines what does happen to you. Not specifically. But in general. And luck, chance, fortune, whatever you want to call that nonexistent referent, has nothing to do with it. 

Now if you want proof of what I've just said, forget it. It's not possible. You're just going to have to trust me on this one. 

Think about it.