Hindsight is a wonderful thing and we can use people’s past experiences and mistakes to guide our lives. Oppenheimer actor Cillian Murphy was asked what he would tell his 21-year-old self, and his answer is something we should all follow. Cillian Murphy’s advice for his 20-year-old selfSpeaking in an interview with the Screen Actors Guild-American Federation of Television and Radio Artists, the actor said his advice for his younger self is: “Instinct, instinct, instinct over intellect.” “Always instinct. Just because you can rationalize it doesn’t mean it’s right. If you feel it, then it’s rig…