The worst: When people tell me that they sense nothing special in me and I don't have any kind of charisma. The worst about this is that I've heard it so many times in my life. It's a recurring thing and I hate to hear it over and over again. I feel that this charisma thing is something I cannot properly control, no matter how hard I try.

The best: I rarely hear good things about me from others and nothing like that comes to my mind for now. Maybe I'll get back to this later.

Oh, I've got one: it's not a big deal, but I like it when native English speakers compliment on my English. Many of them ask me whether I lived abroad for a longer period of time or something (I didn't).