Which is better for your own sake, to think that most people will treat you well, even if that is not quite true, or to think that most people will treat you badly? If it is the former, then people who discourage you do not have your best interest in mind.
Why would they do that? What is the benefit? But what would life be, without the fierce delights of enmity? Why, people might fall back into peace, or at least a complaisant tolerance for one another, unless there were some concerned citizen to ensure that every honest mistake will be interpreted as a crime and every crime as a full-scale attack.
In the 1945 film The Valley of Decision, Pat Rafferty (Lionel Barrymore) is an old and embittered man who was crippled for life in an accident at the steel mills. The mill owner, Mr. Scott (Donald Crisp) is both rich and fair-minded, caring more about making the best steel in the country than about the wealth he could glean by selling his independence to the industrial giant, Andrew Carnegie. He has seen to it that Rafferty is paid his regular salary for the rest of his life, but that only rankles the old man all the more.