It stands for Garbage In, Garbage Out. In life, as in computers, what you put into something is what you'll get out it. There is no such thing as luck.
Nothing ever happens by chance.
Everything, good or bad, that comes into your life is there as a result of unvarying, inescapable Law. And the only operator of that Law is none other than yourself. No one else has ever done you any harm of any kind, or ever could do so, however much it may seem that he did. Consciously or unconsciously you have yourself at some time or other produced every condition, desirable or undesirable, that you find in either your bodily health or your circumstance today. And as long as you go on thinking wrongly about yourself and about life, the same sort of difficulties will continue to harass you.