I wish I was faster at thinking on my feet and being more assertive, but in classy way. When somebody puts me on the spot to do a big or unreasonable favor, I often find myself saying yes before thinking about it or saying no and feeling I owe them an apology or explanation for saying no. I noticed somebody said they think of a good comeback after it is too late if somebody makes an uprovoked snarky comment and I am the same way. Often times I let it go when I am not comfortable with the person saying it or come back with something equally as rude and immature if I know the person well. I'd love to be able to come back with a witty, but classy comeback on the spot.
I wish I was better at making small talk and conversation with aquaintances and strangers. I am rather shy and feel out of place when with a large group of people who are not close friends like a business meeting or a cocktail party. Some people are so easily able to strike up conversation at a party and I always feel that when I try it the conversations are awkward and the person I am talking to is looking for an escape.