@jeplet The discipline you’ve learned or put into practise there with quitting is powerful.
And when you find a regret like this, early on, consider yourself lucky! Use it to strengthen your resolve, and become more focused on what you want to achieve.
Your mindset is key. If you put these qualities to work, you can move mountains.
Don’t beat yourself up for developing character. Bank the learning, and keep moving forward with your better self.
p.s. it’s me, your dad (j/k)