Without a humble but reasonable confidence in your own powers you cannot be successful or happy.
Norman Vincent Peale - Happiness - Success - Power

The really happy people are those who have broken the chains of procrastination, those who find satisfaction in doing the job at hand. They're full of eagerness, zest, productivity. You can be, too.
Norman Vincent Peale - Procrastination - Happiness

Nothing of great value in this life comes easily. The things of highest value sometimes come hard. The gold that has the greatest value lies deepest in the earth, as do the diamonds.
Norman Vincent Peale - Life - Motivational - Work

Every problem has in it the seeds of its own solution. If you don’t have any problems, you don’t get any seeds.
Norman Vincent Peale - Problems - Solutions

Through persistence, self-knowledge, prayer, commitment, optimism, a resolute trust in God and the building of your own personal moral strength, you can enjoy the blessings of a deeper faith and face the difficulties of life with courage and confidence.
Norman Vincent Peale - Life - Work - Problems - Self Control - Strength

Formulate and stamp indelibly on your mind a mental picture of yourself as succeeding. Hold this picture tenaciously. Never permit it to fade. Your mind will seek to develop the picture.
Norman Vincent Peale - Success - Motivational - Self Control - Commitment