Numbers 1 through 7 are in the order I recommended.

1.  Mental Toughness Handbook. By Damon Zahariades. Excellent. You will be glad you bought it.
2.  Maximum Achievement. By Brian Tracy. Some of the best money you will ever spend.
3.  Learned Optimism. How To Change Your Mind And Your Life. By Martin Seligmans.
4.  Don’t Shoot Yourself in the Foot. By Daniel Amen. One of the best books. Several Selftests
5.  Looking Out for Number One. by Robert Ringer. One of my favorite books
6.  Soar With Your Strengths & Manage Your Weaknesses. By Donald O. Clifton & Paula Nelson. One of my favorite books
7.  Managing Thought How Your Thoughts Rule Your World. by Mary L Lore
8.  Being Happy by Andrew Mathews. Easy to read, with cartoons, 132 pages.
9.  Forgiveness How to Make Pease With Your Past & Get On With Your Life. By Sidney and Suzanne Simon
10.  Happiness in Hard Times. by Andrew Mathews. Easy to read, with cartoons, 216
    pages.
11.  Maximize Your Mental Power. by David Schwartz
12.  Emotional Intelligence by Brandon Goleman
13.  100 Simple Secrets for Successful People. by David Niven
14.  101 Great Ways to Improve Your Life .by David Riklan
15.  Goal Free Living. by Stephen Shapiro
16.  Ultimate Secrets to Total Self Confidence by Robert Anthony
17.  Psycho–Cybernetic. By Maxwell Maltz
18.  You Are What You Think. By Doug Harper
19.  The Resilience Factor. By Karen Reivich and Andrew Shatte.