Forget about how you did on the previous one, profit or loss. Your success as a trader will be achieved when the probability of successful trades outweighs the probability of losing. This will not work if a trader only executes 1 of 10 trades. You desperately trying to pick the best trade rejecting trades that meet your criteria one by one. When you finally do take one and experience a loss on that cherry picking trade, it becomes more painful, reaching a point where it is impossible to take any trades at all.
Success is unlikely to come without consistency.
Believing that you can actually master the Game is crucial. Everyone is capable of being a successful trader. Good attitude, passion and undivided responsibility when mastering the Game of Trading are the must and can make a good trader even from self-doubter. Traders that manage to Master the game and maintain right state of mind will tell you about interesting thing. One day when some critical mass of experience is reached, amazing transition will happen.