There once was a Zam who was cursed to time loop, but it's counted in years instead of hours, but being an optimistic Zam, she tried to live each life to its fullest, so she'd master an art or a field, fall deeply in love, achieve happiness with a significant other... and then it'd start all over again from childhood.
No evil shall escape my sight
Let those who worship evil's might
Beware my power, Green Lantern's light