One of the wisest things I've ever come across is shown in this video - the first tip is "Know your weaknesses". Really, when people give others a piece of advice, they usually tend to begin their speeches with "you can do everything!". It makes a person more confident but if he fails it makes the loss even more shattering. But if a person is told to examine his weaknesses and then act in case of his loss he'll have an explanation - he didn't manage to cope with smth because he had put his weaknesses out of account. And from this point of view the "defeated" won't be disappointed in himself, but only in his preparations.

I also think that belief, passion and courage are very important for entrepreneurs. They really have to strongly believe in their success, with all their heart and be brave enough to accept possible failure and to withstand all the calamities they have to face.
Plan B is also very important. Businessmen usually risk all their assets. The price of any mistake is really extremely high.

Well, these 10 tips can be very useful for one who wants to sturt his/her own business. I was surprised to learn that one of these tips is belief. But still this is right. You will achieve nothing you don't believe you'll get it. One more fact I liked most of all was connected with "Work Smart". That's really so, because sometimes you don't need to work hard if you can just calculate the situation and work it smart and easy.