Quote from an interesting article If you want to be rich, first stop being so frightened

• If you are unwilling to fail, sometimes publicly, and even catastrophically, you stand little chance of ever getting rich.
• If you care what the neighbours think, you will never get rich.
• If you cannot bear the thought of causing worry to your family, spouse or lover while you plough a lonely, dangerous road rather than taking the safe option of a regular job, you will never get rich.
• If you have artistic inclinations and fear that the search for wealth will coarsen such talents, you will never get rich. (Because you fear, in this instance, is well justified.)
• If you are not prepared to work longer hours than almost everyone you know, despite the jibes of colleagues and friends, you are unlikely to get rich.
• If you cannot convince yourself that you are “good enough” to be rich, you will never get rich.
• If you cannot treat your quest to get rich as a game, you will never be rich.
• If you cannot face up to your fear of failure, you will never be rich

Mark Weinstein have some advices for the beginning trader in Market Wizards: Interviews with Top Traders.

You have to learn how to lose; it is more important than learning how to win. If you think you are always going to be a winner, when you lose, you will develop feelings of hostility and end up blaming the market instead of trying to learn why you lost.