Rule #4: Take extreme care of whom you marry.
This rule encompasses learning about women's psychology. They are different from men (despite certain groups who claim otherwise). The world, as I write this, is tilted in favor of women. The role of father and husband is the butt of jokes on television, and in much of our culture. Even the Church is failing men.
The absolute best advice I've seen on this issue is this:
Before you decide to propose to your girlfriend, pop a Red Pill, look her straight in the eye and say this:
“Marriage is a commitment that I take seriously, and I expect my wife to take it seriously too. I am the spiritual leader and protector of this home, and I am willing to give my life for it. I expect a wife to submit to my leadership even when she disagrees with my decision, because I and I alone will be held accountable by God Almighty for the successes and failures of this household. As a wife, I will need your unending support, your sound advice, physical and emotional companionship, and your steadfast commitment; but I will never need your leadership. In return, I offer provisions, love, faithfulness and eternal commitment to you and our future children.”
If she balks, you know what type of woman she is.
Further reading can be found at the following NSFW sites:
Roissy (totally NSFW)
University of Man
House of Eratosthenes