Silverflame,
Relaxation is key to the system. It's said that once in Photofocus, head tilted, ever so slight hint of a smile and one begins to flip pages, the body tends to naturally relax.
One should try to be focused at the task at hand. If your mind wanders, bring it back to the task. Tangerine method helps to improve concentration and the mantra helps to occupy the conscious. Try to be in an enviroment free from distractions and make a 'commitment' to spend X amout of time PR'ing.
After PR'ing go into your 'quite' place for a few moments, re-affirm the impact and if you must watch TV ... check out the PR informercial! 
Remeber one thing, your questions not only help you but the many others that visit this DB .. so thank you!