The expression of aggression is conditioned both biologically and culturally and it can be learned. On the other hand, proper upbringing can completely eliminate aggressive behavior, but it must be remembered that biological conditions remain present and aggression can easily be restored.

Practiced regularly (twice a day), relaxation or meditation prevents angry arousal.

There are people who are excitable by nature and allow themselves to become angry for the most trivial of reasons. Judo can help such people learn to control themselves. Through training, they quickly realize that anger is a waste of energy, that it has only negative effects on the self and others.

On the surface, the people around you appear so polite and civilized. But beneath the mask, they are all inevitably dealing with frustrations. They have a need to influence people and gain power over circumstances. Feeling blocked in their endeavors, they often try to assert themselves in manipulative ways that catch you by surprise. And then there are those whose need for power and impatience to obtain it are greater than others. They turn particularly aggressive, getting their way by intimidating people, being relentless and willing to do almost anything. You must transform yourself into a superior observer of people’s unsatisfied aggressive desires, paying extra attention to the chronic aggressors and passive aggressors in our midst. You must recognize the signs—the past patterns of behavior, the obsessive need to control everything in their environment—that indicate the dangerous types. They depend on making you emotional—afraid, angry—and unable to think straight. Do not give them this power. When it comes to your own aggressive energy, learn to tame and channel it for productive purposes—standing up for yourself, attacking problems with relentless energy, realizing great ambitions.

The root cause of all passive aggression is the human fear of direct confrontation — the emotions that a conflict can churn up and the loss of control that ensues.

The antidote to a bad day is a good workout.

Animals use aggression as a technique for gaining control over necessities... that are scarce or are likely to become so... They intensify their threats and attack with increasing frequency as the population around them grow. As a result the behavior itself induces members of the population to spread out in space, raises the death rate, and lowers the birth rate. In such cases aggression is said to be a "density-dependent factor" in controlling population growth.

Proper physical exercise increases your chances of health, and proper mental exercise increases your chances for wealth. Laziness decreases both health and wealth.

Exercise invigorates the body and sharpens the mind.

The other way we can avoid the experience of anger is through repression. So repression and discharge are two sides of the same coin. Both represent fear and anxiety, and for that reason, both trigger physiological stress responses regardless of what we consciously feel or do not feel.

There is so much pain and suffering involved in physical challenges that it’s the best training to take command of your inner dialogue, and the newfound mental strength and confidence you gain by continuing to push yourself physically will carry over to other aspects in your life. You will realize that if you were underperforming in your physical challenges, there is a good chance you are underperforming at school and work too.

But a windbreak is also a great teacher, for me, about nonviolence. How do we respond to strong forces — anger, rage, even physical attack — without becoming violent in return? How do we respond to what might be well-meant but harsh criticism (whether well intentioned or intentionally hurtful)? If we become a wall, shutting out the energies coming at us, we may actually strengthen the anger of the opposition. On the other hand, if we simply brush off or bat away criticism, the opposition may expand its criticism to include our reactions. But there’s a third alternative: if we can learn from the trees, we can take in and transform the energy coming at us. We do this by staying calm and grounded and centered, by listening rather than responding, by swaying with the wind and letting it blow itself out.

To injure an opponent is to injure yourself. To control aggression without inflicting injury is the Art of Peace.

In life there's stuff you can control and stuff you can't. There's nothing you can do about it. No point getting angry and upset because it's beyond your control. As a professional athlete, you learn to roll with the punches.