Just a few words to live by:
The best ones are not those who win, because whoever wins today will lose tomorrow. The best ones are those who don't give up.
Life is a giant pile of manure with a few precious stones in it. You don't know how many there are, nor where they are. You may never find them, and they may not even be there at all. Here is a shovel, what are you going to do?
Luck is just a subjective judgement made in hindsight, without any base in reality or logic. There is no such thing as luck, bad luck, fate, or destiny, there is only chaos. The world is a chaotic system, and we are but some of the variables.
Be wary of anyone who appeals to your emotions, rather than logic, in order to convince you of something. Those who appeal to your emotions, are really aiming at your wallet.