The security comes as an actor in knowing that you're not in control. If you try to control your career or how people perceive you you'll make yourself unhappy because life doesn't work like that. So much is luck. It's much better to let yourself off to think 'There's nothing I can do.'
I put forward formless and unresolved notions as do those who publish doubtful questions to debate in the schools not to establish the truth but to seek it.