Mozart said, “Neither a lofty degree of intelligence nor imagination nor both together go to the making of genius. Love, love, love, that is the soul of genius.”
I didn’t understand this when I first read it years ago, but I’ve come to see people who really commit to something or someone the “geniuses” of this world.
Freud hypothesized that two drives, Eros and Thanatos, govern our lives. One is pleasure (or “with whom” we pleasure or relax), the second is struggle and aggression (or to what purpose we are called to “fight)”. One idea is that if we don’t love what we are fighting for, it’s hard to excel in it.