Humans have a tendency to want to be right. It makes them feel good and gives them something to brag about at parties. The last thing a trader with a 10% win rate wants to do is talk about his last 9 losses. But a 10% win rate doesn’t necessarily mean a bad strategy, indeed it could be optimal for the market and strategy where its employed. Humans will default to searching out a 100% win rate. When they can’t find 100%, they will drop their requirement to 90%, 80%, 70%, but the bias is to maximize it. And if they see a low one of 10%, 20% or 30%, the inclination is to make it ‘better’. We don’t know OP’s exact markets(s)/strategy(ies) so its hard to judge. What is true is that both fundamental and technical analysis have serious flaws. I guess OP knows this extremely well. As an example, maybe Trader X is shorting hyped-up stocks that are fundamentally dire and going to go bankrupt. Trader X will keep shorting and get stopped-out 9 times, and he knows each time his entries have been terrible. But then with trade number 10 it hits and he makes it all back and more. Like Ironchef says, expectancy is paramount. But with a 10% win rate psychology comes in to play much more in order to ignore the losing trades (and the criticism at parties). Xela makes a great point that you need to be psychologically strong enough not only to handle to ongoing drawdown but also the inevitable questions to yourself over the soundness of the entire system. Risk management together with psychology are surely his best tools. With those in place, who can say that OP’s 10% win rate is not ideal for how he wants to trade.