The same failures you might look back on as your biggest mistakes are also your future mistakes if you don’t make a change. It isn’t enough to just notice past failures, because that is avoidance of working through them. It is foolish to talk like you were a different person two years ago, when it is likely that you are very similar to the person you were when you made some error. It isn’t appealing to accept this, but it has to be done if you want to find ways to prevent a similar occurrence.
Let’s say you made a huge error years ago that indirectly ended up costing you a lot of money. This could be a valid example for many folks. If this were the case, you would get no benefit in telling everyone about your failure to hold on to the money, or about how you lost it. On the other hand, you need to see what it was about you that caused the large loss of money. Maybe it came down to you being too shy to challenge someone when they left your assets in a precarious situation, or you were too afraid to fire an employee when your business was failing, and so you lost even larger sums in the process. Regardless of the situation, you need to see where your weakness was.