How can I deal with hyper vigilance

[Awakeatnite]

I have just been reading a self help book which involved painful reflection of my childhood which I have shut a lot of away, but it’s necessary to understand certain thought processes I have now.
I am hypervigilant. I am fearful of yelling, swearing, and any sign of anger or frustration. I now understand that when I sense someone is getting angry, it meant survival mode for me as a child.
I am afraid of everyone and I have only just started to realise it’s because I’m afraid incase they turn on me.
It’s effecting my everyday life, it’s the cause of my fear of others and I’m not sure if there’s something I can tell myself to show myself that I’m safe?

What book were you reading? It's not a great idea to dig into traumatic past without having a safety net of ways to ground yourself already in place because of exactly what you're experiencing.

Grounding techniques: psychcentral.com/anxiety/using-the-five-senses-for-anxiety-relief

Have a look at Kristin Neff's self-compassion work. And I'll try to think of some additional sources.

Im not qualified but this can be helpful - to acknowledge consciously your unconscious reaction and then immediately counter act it with the conscience ‘truth’ so almost ‘thank you subconscious for altering me to this perceived threat - but I know that Alice / Mike / random stranger is angry / frustrated about xyz and isn’t going to hit me”

Can you afford psychotherapy?