Actually, I'm an overnight success, but it took twenty years.

It takes 20 years to make an overnight success.

I'm what is known as a 40-year overnight success.

There's no such thing as an overnight success. It took me a long to get there.

My dad told me, 'It takes fifteen years to be an overnight success', and it took me seventeen and a half years.

I was 40 years old before I became an overnight success, and I'd been publishing for 20 years.