If a problem is fixable, if a situation is such that you can do something about it, then there is no need to worry. If it's not fixable, then there is no help in worrying. There is no benefit in worrying whatsoever.
In everybody’s life there’s a point of no return. And in a very few cases, a point where you can’t go forward anymore. And when we reach that point, all we can do is quietly accept the fact. That’s how we survive.