He thought he was having the world by the testicles.

He is having the world by the neck.

He is having the world by the balls.

She is having a dog in the fight.

She is having it both ways by working part-time and pursuing her passion.

Having been around for many years, the company has gained a lot of experience.

He is always having a screw loose.

She is having a normal one at the party.

She always has eyes bigger than her belly and ends up wasting food.

I have my work cut out for me with this project.