1. CNN.com
From CNN's Health Library. A well written article on training the mind.
2. LookSmart's FindArticles
A short, interesting article, "Self Talk and the Endurance Athlete", focused on the mind-body connection.
3. Mental Skills Ltd
Detailed sports psychology article on Self Talk's impact on an athlete's performance. Written in somewhat 'clinical' language.
4. Peak Performance | sports science | training for athletes
Sports psychology article on how a professional golfer used self talk and imagery to conquer his persistent lower back pain.
5. Whistler/Blackcomb Ski School Training
Not just for skiiers! A wonderful article titled "POSITIVE THINKING AND SELF-TALK".