Files, programs, methods, etc. with a high complexity are hard to change:

Analyzing Complexity

Complexity Widget

Add the Complexity widget to your dashboard:

And have a look at the distribution to check if you do not have too many very complex methods or files.

You can then drill down.

Metric hotspot Widget

Add the Metric hotspot widget to your dashboard with metrics like complexity /file, complexity /method, etc to hunt for high-complexity components.