Anakin Skywalker's story was well summarized by "Weird Al" Yankovic, who sang, "My, my, this here Anakin guy, may be Vader someday later, now he's just a small fry. He left his home, and kissed his mommy goodbye, saying 'Soon I'm gonna be a Jedi. Soon I'm gonna be a Jedi.'"
Anakin's irrepressible fear, anger and hate drove him to the Dark Side, where he became Darth Vader under the tutelage of Sheev Palpatine.