This quote is similar to the saying "You reap what you sow", which means that the actions we take will eventually have consequences. If we plant good seeds, we will reap a good harvest; if we plant bad seeds, we will reap a bad harvest. In the same way, if we make good choices, we will have a good life; if we make bad choices, we will have a bad life.
Ultimately, the quote "Every man is son of his own works" is a reminder that we are all in control of our own destiny. We can choose to make good choices and live a good life, or we can choose to make bad choices and live a bad life. The choice is ours.