I will continue to be a proponent of meditation practice. It’s honestly a shame imo that it has a “mystical” connotation. I think it’s very practical. I really don’t think of it much more than dedicating time to observing how my brain works. And a lot of that is all the stuff that arises that doesn’t feel like it “under your power.” When you actually sit down regularly and take notice of the arising and falling away of thoughts and emotions, it becomes a lot easier to not let it consume you and react.

It’s one thing to “know” the emotions are temporary and you shouldn’t react so strongly. It’s another thing to really internalize that and be able to have that same perspective in the moment of strong emotion. It’s practice.

Stop caring what other people think. Within reason of course, no need to go full psychopath. 😆 They don’t really care what you think so why waste the energy and time? Save it for people who demonstrably give a shit.

To accept it, you just move on with your life. Find the next thing you should do and do it. The more you dwell, the harder it will be to stop dwelling, so just break the cycle and go do anything else.

You will encounter plenty more people who are insistently wrong. Each one will affect you less than the last.

One is perspective. For me, most situations don’t fucking matter because no one died or was seriously injured. I have to deal with safety pretty heavily on a job where either one of the people I’m responsible for gets injured or killed or a member of the public can be injured or killed. It makes other areas of my life less critical.

Another way is reframing. He got the last word, but you said made him run away. You did more damage, what you said was more impactful that he had to run away. When you look at it through that frame, you won. On the other hand, you had a debate on the Internet, so maybe neither of you won.

This is a tough one, that takes practice and mental discipline.

You’ve already acknowledged that you can’t change how things ended with this individual. Right now, you’re in a very natural place for humans to be: you’re feeling powerless, like someone has done something to you, and you want to blame that other person for how you’re feeling.

The bit that takes practice and discipline is that you CAN change how you choose to react to things like this. You can take accountability for your reactions and emotions.

Why is this irritating you so much? What is it about the exchange that annoyed you, and makes you wish you could reply? If you had the chance to reply, would you want to do the same thing - reply and block - or continue arguing? To what end? What outcome is it that you want?

Accepting reality starts with acknowledging there are things you can’t change. You’ve already said that, so you know this is the right path to continue going down.

The bit you need to try and take accountability for is understanding why you’re feeling the way you are. This isn’t about the person “robbing you” of the chance to reply. It’s about why you feel so strongly that you need to reply.

Until you know why this pissed you off so much, you can’t take meaningful steps to getting yourself into a better emotional state.

Edit: I feel bad that your OP is getting downvoted. You’ve asked a legitimate question about mental health, and some people are clearly writing you off as you having a whinge.