Olin Miller said, "You probably wouldn't worry about what people think of you if you could know how seldom they do." If you want to achieve success in entrepreneurship, it is essential that you develop an immunity to criticism. When you strive to be or to do something great there will always be those individuals that will lash out at you whether due to jealously, envy, or other feelings of inadequacy. The further up the scale of success you ascend, the greater the likelihood is of others wanting to knock you down. This is simply the nature of achievement and something you must keep always at the back of your mind so that you never become blindsided by an impending attack.
Imperviousness to the criticism and judgments of others is something I was fortunate to learn and adopt very early in life. I had a very strong German grandmother that helped raise me and she instilled in me the ideas of ignoring the agendas of others and instead doing what I felt was right and being an individual. This has served me well because I have always had an incorruptible sense of independence and individuality that is quite liberating as opposed to what the majority of people experience, which sometimes borders on anxiety and paranoia about what other people are thinking or saying about them behind their backs.