- accept that some people have no conscience.
- when considering a new relationship of any kind, practice the Rule of Three regarding the claims and promises a person makes, and the responsibilities he or she has. Make the Rule of Three your personal policy. One lie, one broken promise, or a single neglected responsibility may be an misunderstanding instead. Two may involve a serious mistake. But three lies says you're dealing with a liar, and deceit is the linchpin of conscienceless behavior. Cut your losses and get out as soon as you can.
- suspect flattery.
- do not join the game.
- question your tendency to pity too easily.
- never agree, out of pity or for any other reason, to help a sociopath conceal his or her true character.
If the book's claim that 1 in 25 people are like this, then it seems wise to understand these issues, behaviors and signs. The book is interesting.