i have always had a really hard time:
1) accepting feedback of any kind (by accepting, i mean in the usual way, but also physically letting it in. i relate to the sp4 experience of being stuck in my own skin bubble. i have to consciously try to hear what others are saying. sometimes i hear but it takes a second for it to register or sink in. sometimes it takes years.)
2) getting people to give me feedback. people are afraid of / intimidated by me! i kind of love that, but it's also extremely isolating.
3) getting close enough to people that they have any feedback to give me (besides that i'm intimidating or aloof)