http://mysticsight.blogspot.com/2008/12/power-of-mind.html
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Making a conscious effort to change a few words in your vocabulary will help too. Here is a short list of word and phrase replacements. Try adding your own.

Always = Often
Bad = Unwise
Cheap = Economical
Childish = Childlike
Difficult, Hard = Challenging
Faults = Differences
Failed = Attempted
Headstrong = Determined
I Have To = I Choose To
I Should Have = I Could Have
Mistakes = Lessons
Nitpicking = Meticulous
Never = Seldom
Problem = Challenge
Worried = Concerned
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