The first requisite for success is to develop the ability to focus.

My success is due more to my ability to work continuously on one thing without stopping than to any other single quality.

The first requisite of success is the ability to apply your physical and mental energies to one problem without growing weary.

Focus alone is not enough; putting in the time to commit is also crucial to achieve success.

Focus on your customers and lead your people as though their lives depend on your success.

If you worry about yesterday's failures, then today's successes will be few. The future depends on what we do in the present.