You can't control the uncontrollable. And everything is uncontrollable.
You try to control the behavior of your kids.
You try to control the behavior of your employees.
You try to control your mate.
You try to control how others feel about you.
You try to control your personal security.
You try to control your 'limited' resources.
You try to control your freedom.
None of those things are controllable by your worries or by your actions.
All of these things become exaggerated by your attention to them, or by your awareness of lack of control in general.
Conversely, all of these things take care of themselves when you control the only thing you can control: Your emotions.; aka; your mood, your perceptions, your state of mind.
How do you control emotions, mood, perceptions, state of mind....?
Decide you want to.