Staying Positive. It should be a collective thing

So many books on personality development talk about staying positive. But many of them miss the point that staying positive helps you achieve things or solve issues only in matters in which you are the only stake holder. In issues where more than one person is involved (typically in a team environment), its the collective spirit that matters. The same positive energy should be radiated by others. Imagine arguing something with a person who always turns you back with negative comments or doesnt look at the arguements with the right spirit. That will frustrate you at some point and will make you feel totally negative. I havent come across any experiences that suggests a better way to handle these kind of scenarios. Any magic formula for lifting the spirits of people surrounding you? Till I find one, let me continue to search for one.