⟩ Why should you show how you have learned or grown from your mistakes or weaker areas?
All negative experiences can be useful as long as you are able to learn from them. Instead of freaking out about a mistake you have made or something you are not as good at, learn from them. If you can show your interview what you took away from a less than ideal situation it shows them that you have the maturity and insight to learn and evolve. That is a really important quality.