Be true to yourself. Allow for self improvement if you are criticized accurately. But, you are not required to make changes that are not genuine to you. Most people are friendly. Some have developed defense mechanisms to protect themselves. We can’t instantly know what they have been through that has led them to this point. Erica Jong once wrote that you have to take a lot of s**t off of people before you get to that real person underneath. Care what others think of you—up to a point. After that don’t cater to others, or else the essential you will suffer injury. Be true to yourself, and cultivate the good in you.