[mattlondon]

This is where a "funnel" approach can be useful. E.g. you want to measure people on their way to feature X, so you measure the steps before feature X too and see how far down the funnel people get.

When you start to see people going in loops or doing the same things over and over but not quite reaching the destination, then you know you have UX issues.

Of course this is good only for "near misses" - you may have users who don't even know where to start - that is harder to identify.