The lifespan of a successful pop star bears little resemblance to that of the average individual. Pop stars are, in essence, Phoenixes: they soar, plummet, and then disintegrate, finding rebirth in their ashes, stronger and smarter than their previous incarnation. No name defines this phenomenon better than Jennifer Lopez, the Puerto Rican pop sensation who went from dancing as a Fly Girl on “In Living Color” in 1993 to topping Billboard’s Hot 100 by the end of the decade. As of late, Lopez’s career has started to feel like one perpetual comeback tour, with the actress and singer either rehashing past successes or struggling to create new ones.