Anakin Skywalker is the Chosen One who brought balance to the Force. This has been confirmed by George Lucas. However, bringing balance to the Force has been interpreted in many different ways by fans. NOTE: In the canon three-episode Mortis arc from The Clone Wars television series, the Father, keeper of the balance, states that "too much light or dark would be the undoing of life as you know it". 2nd NOTE: Poe Dameron's actor, Oscar Isaac, in an interview with Mario Lopez, says that the Force is made up of both the light and dark sides of the Force. There is no "true" thing and Star Wars is NOT a one-sided franchise. The light side and the dark side need to have even weight distributions. Anakin kills the Jedi and leaves only 2 Jedi and 2 Sith in the galaxy left. Equilibrium. (I think this is really silly because Palpatine and Vader clearly had near absolute control over the galaxy while the Jedi were pretty much vanished. Also, there only being 2 Jedi and 2 Sith is false because you have Kanan and Ezra in Star Wars: Rebels which is canon. Also while they might not be Jedi or Sith, you have Ahsoka Tano, Maul, and the Inquisitors. There is likely more Jedi in hiding). Light Side balances the Force. The Dark Side wrecks the balance. Darth Vader/Anakin Skywalker sacrifices himself to destroy the Emperor and save Luke. This leaves Luke Skywalker, a Jedi, as the only known Jedi or Sith remaining in the galaxy and the Force spirits of a redeemed Anakin, Obi-Wan, and Yoda emerge. The Sith want to live forever but ironically, it's something only those who follow the light side of the Force can achieve. The Light Side and the Dark Side need to have a shared 50/50 control over the galaxy. After ROTJ, the New Republic and the weakened Empire share this control. Some fans feel that the Jedi Order in the prequels is actually destructive to the flow of the Force. They became incredibly bureaucratic, stuck too tightly with the status quo, were incredibly arrogant and stubborn, were eager to throw themselves into war, strictly forbid basic emotions like love to prevent anger (which leads to the dark side), and denied the very existence of the dark side, letting Emperor Palpatine take control of the Republic right under their noses. George Lucas defines the Jedi as "selfless" and the Sith as "selfish" in the Phantom Menace bonus features. The flaws of the Jedi Order exist because they WERE NOT being selfless. Being arrogant, stubborn, refusing to listen and be attuned with the Force is not a result of being selfless. Selfless people understand their capacity for failure and try to be aware of their actions. So aren't the flaws of the Jedi Order in the prequels a matter of them having lost their way and alignment with the TRUE light side rather than too much light itself? Yet the Mortis arc in the Clone Wars seems to be absolutely anti-light over dark. My own worldview aligns with The Winter Soldier (Captain America)'s view. SHIELD was founded on a pure beliefs and ideals, in the Winter Soldier, they moved away from this when Hydra took over control. At this point, it wasn't SHIELD anymore. It was Hydra operating within SHIELD. Like a parasite controlling your body's actions. That's NOT YOU. So the Jedi Order messed up and the Republic was flawed in the prequel trilogy, but that came from their departure from being aligned with the light side. For example, "feminists" that go around spreading hate have fallen out of their true goal of bringing equality.