Say you die, and you come back to life as a 2nd century Carthaginian, or something.
Time isn't linear, so yes. It may be hard to swallow but your past selves exist now simultaneously and you influence each other. That's why memories change and that's why kids act in a bizarre way.
Think of a bubble gum which gets pulled. The same way your past self gets "pulled" into the future. But it still exists.