We begin to attribute their issues to attitude problem. We might even try to fix it. Try to make them more like us. But success or failure is not the result of just attitude. Twenty other things are as influential. All the maxims oversimplify the truth.
Not everyone has to finish the race at the same time to win. In fact, there is no race at all. If someone asks for your advice, be generous with it. But don't waste time and energy in sheer pedagogy. It is insulting to the receiver.
The paradox of success is this: you have to separate yourself from what you have achieved. What you have might be delightful, but it might not be what someone else wants. Let them find their way to success and happiness.