You may be familiar with opponent profiles in other ways too. For instance, you can similarly use Phil Hellmuths guide that applies creature-like characters to your opponents such as an eagle or an elephant. I have added a profile to this guide as well called the monkey specifically in mind for certain internet players.
In a sense, this is what poker is all about. Havent you noticed that the players who can manage their emotions at the table are often the ones with the most success? When was the last time you saw Howard Lederer, Dan Harrington or Phil Gordon chastise somebody for any reason at the table?
I have been at about 40 final tables in the last 3 months and still feel I have to consciously control these feelings in order to make the correct move given all the circumstances. The correct move changes in each situation from going all in with 74s and folding pocket Kings I have done both!