It has been a tough 12 months for the most successful driver of all time.

First, it's December, historically their toughest month of the season.

I still think we have a tough 12 months ahead of us.

But a tough month is looming, when 16 of the first 20 games will be on the road.

It's been a really tough month for me and I'm ready to go.

A success is hugely important, but brings with it some tough months.

We are facing a very tough two or three months.

"It's been such a tough 12 months for me," she said.

"It's been a tough month and business was difficult to get," he said.

January, of course, is always a tough month at the box office.