"I take a hiatus every now and again, but I'm not good at that"

Miley Cyrus is suggesting that she takes breaks from her work from time to time, however she is not great at it. This might mean that she discovers it challenging to take a break from her work and relax, or that she is not great at taking a break and coming back to her work. It could also suggest that she discovers it difficult to take a break from her work and come back to it with the same enthusiasm and energy as previously. It could likewise suggest that she discovers it difficult to take a break from her work and return to it with the very same level of efficiency as previously. Whatever the case, it is clear that Miley Cyrus is not very good at taking a break from her work and returning to it. This could be due to her commitment to her work, or it might be due to her worry of missing out on chances or not having the ability to keep up with her work. Whatever the case, it is clear that Miley Cyrus is not excellent at taking a break from her work and coming back to it.