@AustinTheAspie ,
You have many things going on in your original post.
I'll start with my experiences;
For leverage on yourself towards being a man and a better person, each time that defensiveness or emotions get the best of you your reactions demonstrait to the world that you do not have self-discipline in all areas of your life. Notice how I said "in all areas" as I am operating under the assumption that you do have self-discipline in some areas of your life - use the 'what' and 'how' within areas of self-discipline as examples and extend those skills into other areas where you react rather than respond.
Your primary objective needs to have a mindset of response, not of reaction. Reaction is usually emotional and instant, learning how to respond requires patience, pause, reflection, strategizing and then delivery of your response. People will actually notice you taking a moment to think your way through a response, this is a good thing as they struggle to respond also - over time it gets easier to respond and not react. One of my most influential responses is "let me get back to you" - and I do.
Any person can provide an instantaneous reaction that adds no value. Maturity and experience are demonstrated by taking a moment to reflect and respond - that is a charactoristic of a good leader that people will follow.
If you are defensive, or you are reactive - then you reflect poorly upon yourself. So, each time you feel a button of emotion or defensiveness being pushed, pause and say nothing, walk away with a smile on your face as you know you are about to dissect the "why" you feel the way you feel so you can gain power and influence over that which triggered the emotion and defensiveness. Each time a button is pushed, you have the opportunity to learn about yourself and how you interact with your environments.
It does not matter what happened in the past, all that matters is how you make things happen in the now and future.
Everything from your past is an experience to help you be a better person now and in the future.
Give yourself the greatest gift, by working to be accountable for being a man and a leader.