It depends on what it is.

Hugh Macleod offers:

‘There is a famous old quip: “A lot of people in business
say they have twenty years’ experience, when in fact all
they have is one year’s experience, repeated twenty times.”‘

In fact, there’s evidence to show that doing the same thing over such a period of time sees the quality of performance reduce – you’re worse at your job at the end than you were at the beginning.

Not the kind of repeat we want, but add some freedom to do your art and something interesting happens.  It’s now impossible to do the something in exactly the same was as you did before, no matter how you try – a different: colour, note, line, movement, idea, context, juxtaposition, person, speed, culture … – and you can’t repeat.

Which for most of the time is good, though it can also be frustrating.  I didn’t say it wouldn’t be hard.

Two things that repeat in a good way: 1) you turn up every day, ready to contribute your art; 2) your ‘constant potential for renewal’ turns up on a similar cycle.*

(*Ken Robinson argues that life is not linear but cyclical – opportunities come back around.)