These are my all time favorite success books:

ABUNDANCE
Think and Grow Rich by Napoleon Hill

FINANCIAL SUCCESS (for young people)
Retire Young, Retire Rich by Robert Kiyosaki

STAYING POSITIVE
Success Through A Positive Mental Attitude by Napoleon Hill and W. Clement Stone

PEOPLE
How to Win Friends and Influence People by Dale Carnegie

PROCRASTINATION
Eat That Frog! : 21 Great Ways to Stop Procrastinating by Brian Tracy (My FAVORITE self-hep author)

PRINCIPLE-CENTERED LIVING
Seven Habits of Highly Effective People by Stephen R. Covey

SALES
How to Master the Art of Selling by Tom Hopkins