In 1977-1980 I worked in a jail as a warder. When I left I realised that the eorld does have an unsavoury element of human beings be it- evil, predatory, manipulsting, scheming, nasty, violrnt and jealous.
I devided it was possinle to gilly defend yourself against such people do what was the better method of living with them in ones life.
I realised that my defences were low, I was vulnerable regardless of my prison job, srnsitive regardless of my RAAF service 17-20yo and crowd control, I needed to learn a method of avoiding the nasty or rejecting them quivkly if my judgement is poor and I let them into my life too easily.
Its all explained in the following threads. Google
Beyond blue topic fortress of survival
Beyondblue topic fortress of survival part 3
Beyondblue topic fortress of survival (workplace)
Beyondblue topic the best praise you'll ever get
beyondblue topic low self esteem
Beyondblue topic 30 minutes can change your life
Hope that helps. Knowing you, you've already read some lol.