The key factor here is your own psychology.

While latinasonly is correct that exposure to well adjusted men can rub off, it is not necessarilyl the fastest method.
Perhaps the best work on this is No More Mr. Nice Guy by Robert A. Glover.

This book is essentially "assertiveness training". You need to look very carefully at your need to please other people, your urge to put their needs ahead of your own, and at how your empathy leads you to be weak from neglecting what you want.

Once an assertive attitude is in place, the words and actions will come out of you automatically - you won't need to strategize and pre-plan various strategies.

Also note that I suggest assertiveness, not "domination". There is no need for psychopathy, for unfairly or unjustly promoting your own interests. That is going too far.

Strive for something between "weak tit" and "asshole", where instead you take no shit from anyone, but also don't fuck with people who don't deserve it either.
Here, I actually think about the youtubes of Terrence Popp.
He did everything he could to take care of his own troops, he intervened on behalf of contractors were left exposed to enemy fire with no cover and forced battalion HQ to erect sandbags, he tried to be fair at all times.
He also sunk careers of incompetent and malicious officers and non-comms, unleashed viscous pranks on people who fucked with him, gamed the system and skirted or outright broke rules when they were stupid or dangerous.
That is the sort of Alpha you want to be - not a mean asshole, but someone who will unleash the fury when it is deserved.
(Caveat: Popp is MGTOW, so you can ignore that portion of his content if you wish.)

You can be assertive and still be moral.

If you see that clearly, and how you are not that way now, you are 2/3 of the way there!