I don't believe everyone is evil but there are certainly people to avoid out there. Coming from an abusive background I find it difficult to trust anyone so I get where you are coming from. It has taken years and many tries but I have finally found a therapist and psychiatrist that I trust and work well with. It is possible! Still I cover my heart with most people to protect myself from harm. Finding the good people can be difficult but it is worth the effort. Also words like good and evil can be very black and white while this world usually works in greys. Even the best people have some evil in them and vice versa. I try to navigate through life avoiding being hurt badly again but this does leave me lonely at times. Sometimes it is worth taking a risk and letting someone past your defences.