1 On the road to success, the greatest enemy is neither lack of opportunities nor lack of qualifications. The greatest enemy of success is the lack of control over one's emotions. When you are angry, you can't control your anger and make your partners around you flinch. When you are depressed, you indulge your depression and waste many fleeting opportunities.
If a man can control his passion, desire and fear, he is superior to the king.
John Milton
The secret of success lies in knowing how to control the power of pain and happiness without being countered by this power. If you can do this, you can control your life, otherwise, you can't control your life.
Anthony Robbins