If you can't stop this you're weak

Be stoic.

Don't complain about the things you can't control.

Don't complain about the things you can control.

Just stop complaining, at all.

Stop it.

Let's look at it like this...

Let's say you have a problem in life...

Can you do something about it?

If yes, then do something about it.

No reason to complain.

Let's say you CAN'T do something about it.

Still no reason to complain.

It's not in your control.

It's easy to understand but hard to implement.

Practice.