I find myself more aware and paying more attention to those around me. I find I have more confidence in what rare personal conflicts I find myself in. This, contrary to some expectation means I am less likely to get hot headed or rash and more likely to be able to de-escalate and calm the situations down. I work in customer service at a repair shop that also handle police impound and towing, so I deal with angry people all the time. Knowing that I have an edge they don't know about helps me to stay above the petty insults and anger they throw sometimes. I believe most ego and machismo that leads to fights is caused by fear and insecurities of one type or another. I find myself less subject to such fear.
( I must say that conflicts are truly rare, even in my position. I can count on one hand the number of serious ones I have ever had in four years here.)