I wouldn't waste an scintilla of worry over something that is totally beyond my / our control.
If you're spiritual, take comfort in the belief that God does have a path planned for everyone; maybe not the path that you charted, but one that he did.
If you're not spiritual, then take comfort in the adage: If you worry about something terrible coming to pass in the future, if it does indeed come to pass then you will have suffered through it many times over, day after day.
Either way, don't worry about the things you can't control.