I don't summarise well. I always feel like anything I say needs a lot more context to make sense, so I try to add it, either starting a long way before the point I should, or rambling on a long time after the point is clear. When I try to summarise, I go to the end point I'm trying to make, but still feel the urge to fill in more details after the fact.
Mokalus of Borg
PS - I feel like I should add more to this.
PPS - But that would demonstrate a stunning lack of self-awareness.