As you're trying out these steps, keep in mind that for most of human history there has been no air conditioning. People who lived 100 years ago were not unhappy, unproductive, or miserable without it. Simply keeping this in mind will help you realize that it's not that hot.
Another thing to remember is that if its summertime, its okay to feel hot. Isn't that what we spend all winter wishing for? Let it be summertime and be a bit warmer. Eat some melon. Take a nap. Swim. Go to a BBQ. Its supposed to be warm!
Humans have lived in every climate for thousands of years. When did we get so fragile that we had to always be at a constant temperature of 72 degrees? Who came up with that number anyway?
Well that's the end of my rant and my instructable. Just remember that its okay to feel hot when its hot.