All of the above being said, let's get on with today's list:
Don't be annoying.
Don't have a weird, off-putting personality.
Don't be clingy.
Don't pretend to be silly and immature and young and dumb to cajole people into doing things for you. We all know. We all hate you.
Don't use the little girl voice. If you are an adult, its a voice. You know who you are.
Don't overuse the laugh to flirt with people in inappropriate settings and situations.
Don't think that asking a different way is not the same as asking again. You know it is. Stop.
Don't talk too long, and not seem to know when to leave. If it seems weird, get out already.
Don't keep asking a question that has already been answered. See above.
Don't think that everyone is interested in you and that you are so damn interesting. (Hint: If you have to keep finding an audience to listen, it is because you are NOT interesting or they would already be there.)
Don't disregard this notice. If you can't keep a job or a lover or a marriage or a conversation,
DON'T do another thing before you check in with the above list. Apply it liberally, as needed, no limit.