The wise and mighty Allison Moyet said this:
"...hits really can be the bane of your life. People don't see that songs are like a diary of where you were at when you were 22, and then you're 23 and think something different and at 24 something different again. It's like you are forever tied to your hits and that's a fucking pain in the arse, because what is appropriate for you musically then isn't appropriate later on."
She's totally right. It's also tough trying to top yourself. Think back to when you were in your late teens and early 20s. Think about how perfect you were, how confident, how energetic, how young...hard to best that 20 years later.
Doesn't mean you shouldn't try, or that you can't do something different.
And now, of course, one of her hits!