How do you make up for passion?

Petrarch had passion. He had so much of passion and love for Cicero that he wrote letters to him and even to Aristotle. He wrote a whole 3-act dialogue between him and Augustine. Augustine lived and died a 1000 years before him. I feel like I don't have that kind of passion and maybe thats why things feel harder to me. I don't have that instinct and that un-relenting love for anything, anymore. Maybe, the whole Mersault-esque life has made me just that, an ice queen. Petrarch was a humanist and they believe in leaving some kind of a mark in the world to remind people of themselves. I want to leave a mark too, a good one, a great one. I know that I have the love, the passion, the drive and even the blood lust for it, I just need to use it to get the wheels in motion.