Check out an interesting post on the Life Coaching Blog (authored by Dieter Pauwels), 10 Ways to Build a Positive Mental Attitude. Dieter offers 10 valuable points to help you build a better mental attitude, which in my opinion is helpful in dealing with everyday business dealings and stress. I've found that when I'm in a more positive frame of mind, I'm much more effective and I accomplish my goals ... adding to less stress, more business, etc.
You can read all of Dieter's posts by visiting http://lifecoaching.dieterpauwels.com/.