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 TracyThe sad fact is that people are poor because they have not yet decided to be rich. People are overweight and unfit because they have not yet decided to be thin and fit. People are inefficient time wasters because they haven't yet decided to be highly productive in everything they do.
Brian Tracy