Get Over It

My boss has a Ph.D. in Physics from Princeton. She's one of the smartest people I have ever worked with and a hopeless workaholics. Unlike my college classmates (I was also majored in Physics), she rarely wield her intellectual capability like an attack weapon, but was very modest and very accessible. I sometimes jokingly said she's the professor and I am her TA.
Lately I was chatting with her and mentioned how my failure in college had still traumatized me. She looked at me incredibly, and said "come on, that had been a long time ago, how many times you had proved yourself ever since, now get over it." Wow, just like that, she broke the spell, I got my closure, it's time to move on.