Of all the personal development books and CDs available today is there any one that really stands out for you? Is there one that you absolutely could not be without? For me the book that had the most impact was The Success Principles by Jack Canfield is that book. It's packed full of great information, but I particularly love what he says about taking personal responsibility and about goal setting. He believes when we set goals we need to have ones that will make us stretch and grow as a person. My all time favorite CD is The Strangest Secret by Earl Nightingale. It was the first time I could remember someone actually say "we become what we think about".... and it really was life changing for me.