"Frankly - and believe me, I say this without any pretense - when I see the road I've taken, I have to say that thanks to good luck, because without good luck one can do nothing, I've come out pretty well"

James MacArthur is revealing his appreciation for the all the best he has actually experienced in his life. He acknowledges that without luck, he would not have had the ability to achieve the success he has. He is being candid and sincere in his assessment of his life, and is not attempting to appear more successful than he is. He is grateful for the chances he has actually been provided and the luck he has experienced. He is likewise emphasizing the importance of luck in life, and how it can be a significant consider attaining success. He is suggesting that luck is just as crucial as effort and commitment. He is revealing his appreciation for the good luck he has had, and how it has enabled him to come out well in life.