Apart from all of these attributes, to be truly successful, you need to accept losing money as part of the deal.

Definitely there must be loss of money, goods and even man power in any successful business but those losses really shouldn't call for a shut down of the business or make the individual involved loose hope or have fear of a downfall. In any successful journey there must be thorns of any sort to pull you down but the sooner it is realized the better. That's why I would totally agree that successful people are single minded. They give no space for bad energy neither do they take " no" for an answer.