Fear is the mind killer. Many people live in a state of fear. The media doesn’t help this situation. Everyday gloom and doom spew out of TV’s, newspapers, radios, web pages, etc, etc.
I believe fear is also a function of age. Mathematicians do great things when they are young. Start-ups are founded by young men and sometimes women.
I believe that fear is also a function of sex. Women (on the average) need security more then men. Men who are married to women need security more then single men. Men who are married and have kids need security more then any of the previous examples. Old people in general are scared, scared of falling, afraid of Republicans taking their social security checks and afraid of robots that eat old people’s medicine.
You can not live your life in fear and you cannot start or run a business in a state of fear.