There’s many things in this planet.

Some are controllable and we will be able to control them within our means, while the others are uncontrollable.

I will be able to control the speed of my vehicle by stepping on the accelerator or the brakes.
I will be able to control my emotions to prevent myself from over reacting.
I will be able to control my decisions and body to do something.

BUT..

I’m unable to control the speed of another car and the chances of getting into an accident if the driver is reckless. But, I’ll be able to stay vigilant and alert to the road conditions to prevent the odds of getting into one.

I’m unable to control another person’s reaction when this person is filled with emotions. But what I can do is to console this person and possibly change the emotions they have in them, which might prevent the person from doing something