So im on night shift and my wife went out with some friends of ours for cocktails. I sent her a text later in the evening asking how the night was going. She didnt reply to the question at all and I did get the text letting me know she made it home ok and told me good night. So in my insecure wisdom before I went to sleep I didnt tell her good morning like i normally would have and just that I was going to sleep. First dumb part because I was frustrated.
After I got to work I mentioned trying to do some exercise to work on our communication
I struggled with all of this too. Here's the hard truth I had to swallow for myself. My anger, bitterness, and resentment is never an asset in any situation. Even when I am right, even when she is wrong. Even when I'm justified, even when she isn't. Those emotions have never helped me with her or any woman, not even once. Any focus I give to them is a distraction from achieving my goals and enjoying my life. The only time they can be useful is to notify you that you have something you need to communicate to her, or work through yourself. Even when I get sexually frustrated because of pent up demand, there is literally nothing about the emotional sexually frustrated state that is useful for relieving that frustration or anything else.
Being right doesn't matter. Stop caring about who is right. This isn't about who's right, this is about you. This isn't an excuse to be submissive and roll over, and neither is it an excuse to use her as your emotional punching bag.
After I got to work I mentioned trying to do some exercise to work on our communication and she asked if this was because I was irritated with her for going out last night.
I think these exercises with your wife can be useful, but they need certain conditions.
1. You can't initiate them as a reflex to something going wrong. They're not an outlet for you when your frustration is high. Your frustration was high, and because of that, your desire to participate in this exercise was not motivated by a desire to communicate, but rather your desire to relieve that frustration. That is disingenuous and you both know it.
2. Both of you have to be in a good place when you do these, they can't be done when you're not in a good mood. Because then you are literally practicing a behavior that is toxic formally.
3. She has to be on board with wanting to want things to improve. This gets complicated because by definition it is a two person activity. However, you have to approach it as not relying on her. Your job isn't to convince her or get her to do X/Y/Z. That's not your task. When you want something like this, DONT ASK HER PERMISSION and DONT ASK FOR HER APPROVAL. It's submissive as fuck, but even more importantly, that's not how these things work. You need to say something like this:
"I've noticed that I am communicating poorly and this is something I'd like to work on for myself. I still value our relationship and this marriage, and I still would like to save it and improve it. I want to go through some communication exercises so I can continue to improve, what is a good time for you?"
Notice how none of this is about her. Its about you, what you want to do, and why you want to do it. You communicate your intent, and when you ask for her assistance, it is not a permission or validation seeking question. It is a participation seeking question. It really doesn't even matter if she says yes, you improve yourself simply through being able to communicate this way. This is the communication exercise.
Any suggestions on how to prove to my wife that she is allowed to be herself without the fear of me being upset with her?
There really isn't anyway to do this quickly. Its only through refusing to be bitter, resentful, and jealous. Even within the confines of your own head. You cannot allow those emotions to be part of you. She will smell them on you. In this more extreme example you have, I would swallow my pride about it also. Next time she comes home, explicitly communicate something to the effect of "I'm happy you went out tonight and were able to be yourself. I'm still struggling with this a bit, but it was much easier today. I know you just want what's best for us while being able to enjoy your life. This is still new to me, and I appreciate you being patient with me as I get over this hangup of mine".
Do that 2-3 times in a row. Its basically impossible for her to not come to your side after this. Further, by saying this unprompted soon after she returns, you minimize that "angsty period" where both of you are walking on egg shells after she returns. Your #1 goal is minimizing the time either of you spend in that toxic state of tension. After you say your peace, joke around with her, give her a back rub or something slightly sensual. Give a slight impression you're trying for sex, then hard pivot. Smile, excuse yourself, and go do your thing. It will break the loop, sexually frustrate her, and the space will create a vacuum that she will naturally move towards you to fill. If she really tries to initiate on you go for it, but in the meantime just keep ramping her up sexually. Kisses, makeouts, foot rubs, back rubs, ass slaps, grab her throat, arms around the waist, hug her from behind, etc. Repeat those throughout the day, but don't escalate any further.
I did listen to a little of the audio tape for "No More Mr. Nice Guy"
Focus on the part about 'covert contracts'. This is the essence of everything that is wrong with being a nice guy.