No matter how accomplished or how many awards you get, you're always still thinking there's somebody out there who's better than you.

And when the night is cloudy There is still a light that shines on me Shine on until tomorrow, let it Be...

You've got to believe in yourself. ..it really is true, because that's one thing about the Beatles...Man, we believed in ourselves. We knew we were good.

We would normally play it to Cynthia or whoever was around

I did cocaine for about a year around the time of Sgt Pepper. Coke and maybe some grass to balance it out. I was never completely crazy with cocaine. I'd been introduced to it and at first it seemed OK, like anything that's new and stimulating. When you start working your way through it, you start thinking: 'Mmm, this is not so cool an idea,' especially when you start getting those terrible comedowns.

No matter how accomplished or how many awards you get, you're always still thinking there's somebody out there who's better than you.

Look, people are allowed their own opinions and they don't always coincide with yours. As an artist you just have to keep plugging on.