There are people you know who keep making mistakes, even though you tell them over and over how to avoid them. Hopeless, isn't it?
|You may know better than others but it's never an excuse to tell people what to do!|
First are they really needing your say? If not then it's none of your business.
Then are you giving them advice in a way that makes sense to them? It might be they're requiring a bit more hands on guidance.
Finally, it may look strange but they may need to fail to learn. We all do mistakes, what counts is what you learn from them.