Self-discipline is the key to personal greatness. It is the magic quality that opens all doors for you, and makes everything else possible. With self-discipline, the average person can rise as far and as fast as his talents and intelligence can take him. But without self-discipline, a person with every blessing of background, education and opportunity will seldom rise above mediocrity.
Brian TracyYou can achieve almost any goal you set for yourself as long as you have the discipline to pay the price to do what you need to do and to never give up. You can make excuses or you can make progress. You choose.
Brian Tracy