It was when I adopted the principles of liberty—namely that of self-ownership and non-aggression—that I feel I liberated myself, my mind, and became a changed person.
Aside from the personal freedom I feel within, no longer would I ever wish to be controlling toward another human.
Each individual in this world owns themselves and has the moral right to exclude anyone from using their bodies or occupying their physical property as they see fit, up to using violent force to defend such an invasion.
There's all to many people in this world, perhaps men in particular, who want to rule over their partners and watch their every move.
In ways, I was one of them. I'll admit: I've harassed girls after breakups before, pestering them with endless texts, calls, emails, etc. Saying hurtful things to them, snooping on their social media, etc.
While I was never extreme, and always a fairly good guy, it's all still ridiculous to me in hindsight. But honestly, I feel it was libertarianism that made the subtle change in me.
I realize that freedom is about the freedom of association. If someone is done associating with you in life—whether employer, sexual partner, friend, former lover, whatever—you should let them go. Stop holding on to something that isn't yours.
If you want to walk away from me, you're free to go; if you kick me out of your property or life, I'll walk right away. It's the system of domination (statism), I think, that lead us to turn out this way, and I'm doing everything I can to break free and to give all others in my path liberty.