A half-hearted spirit has no power. Tentative efforts lead to tentative outcomes. Average people enter into their endeavors headlong and without care.
EpictetusAnd have you not received faculties which will enable you to bear all that happens to you? Have you not received greatness of spirit? Have you not received courage? Have you not received endurance?
EpictetusYou know yourself what you are worth in your own eyes; and at what price you will sell yourself. For men sell themselves at various prices. This is why, when Florus was deliberating whether he should appear at Nero's shows, taking part in the performance himself, Agrippinus replied, 'Appear by all means.' And when Florus inquired, 'But why do not you appear?' he answered, 'Because I do not even consider the question.'
Epictetus