Being positive at all times when dealing with normal people (or are they?) being difficult with you, is the best strategy to take things to a better and higher level of understanding and relationship. It pretty much ultimately puts you at lead spot because how hard is it to really address every single issue in a positive manner without being tempted to feel negative yourself?
Honestly, from practicing to myself while thinking about what to expect from a little girl (my sister) and coming up with really positive answers actually makes me feel like laughing joyfully inside. I think others would catch on to my humor a little too and not really say anything about the issue if it becomes really bothersome for my little sister.
Basically, being positive will conquer negativity and you have to be smart and not to do this with any random stranger. Honestly, you wouldn't want to be in trouble with the head gangster and try to reason your way through positivity. I guess in principle, it's a good way to exit this life along with trying to beat them silly and get them all locked up through self-defense before having to make an unfortunate departure from this fleshly world. In general, even when you made an unfortunate boo-boo through your personal efforts, by being positive, you have a better chance of keeping yourself laughing and feeling good while communicating to the other unfortunate person in this manner who would probably be so angry with you, but at the same time, at least it would make you feel better and give the other person an opportunity to feel better as well at all times.