You can do it too fast, or too slow, or as Goldilocks suggested, just right. If you rush to divorce in the minimum time after separation (12 months), you can find yourself with an uncomfortable amount of pressure to finish up your property settlement in the required time. Which is, ordinarily, 12 months after the divorce.
On the other hand, if you don’t do anything about divorce–and some people don’t, not for years and years after separation—you might be a bit stuck. What is it that’s stopping you from tying up the ends? That past has been a bit problematic. The present is not that past. The future could be really OK.