This is a good thing to think about from a man who lived through very trying times in the military during the time of world war 2. It is a truth that luck is an important factor in what happens to us through our lives but it can be controlled and we must all make our own luck as best as we can. If we do then we learn fast that it is indeed possible and will make us succeed more often instead of relying on nature to give us luck.
Luck is not a superstition but a thing we can embrace and learn to find in the world if we keep our eyes open for it. Always be prepared to find luck and embrace any doors that open for you because if you miss the chance then it will seem unlucky but if embraced life will become more and more lucky.