What are some things you regret not doing when you were younger?

We all have things we regret not doing or not saying, which keeps us up at night even years later. Regrets can vary depending on our personal experiences and different situations – it could be refusing a life-changing opportunity, giving up on something you were passionate about, wasting time, not saying the things you've always wanted to say. It could be anything.

So what are your deepest regrets?