Anything that brings up deep shame, perceived failures, that kind of thing. But those are also the topics and emotions that have pushed me into therapy, so I end up talking about them but in a superficial way, separated from the intense feelings they bring up. As an example, my wife and I have been unable to start a family naturally, and it has been so difficult to fully share my feelings about this, even though my therapist and I talk about it all the time. I feel like a failure, and even though I know it's irrational, it's so powerful that I have a hard time really sharing that sense of shame and despair and anger.