Your perception might be that your stutter was caused by speaking too quickly as a child, but this isn't supported by any peer-reviewed research. It's understandable to wonder but that doesn't make those wonderings correct. All kids have dysfluencies, especially word or phrase repetitions, as their language and motor speech system matures. Like the meme kid who can barely get his thoughts out: [Did you ever have a dream](https://www.youtube.com/watch?v=Pv61yEcOqpw) He became an adult who does not stutter, as near as I can see. His dysfluencies were typical, and despite getting so much flack for it (imagine half the Internet mocking you), he does not seem to have developed a stutter: [Him as an adult.](https://www.youtube.com/watch?v=Pv61yEcOqpw)