Perhaps your own idea of success in life is something that revolves exclusively around your own satisfaction, like going off and living in the woods. But this is exactly the same situation, you’re just only trying to provide the things that one person wants in that scenario, yourself. Your ability to do this will again come down to your own merit.
Of course if you’re chronically frustrated by being less successful than you would like to be, then looking for alternative explanations such as luck will be an attractive scapegoat that could excuse you from scrutinising your own capabilities. But the human inclination towards doing that is certainly not morally righteous.