Grasp the advantage: find a trading strategy with a positive expected value, because it can create positive returns in the long run. Manage risks: control risks and hold your ground, otherwise even if you have a system with a positive expected value, you may not wait for the day when it creates results. Be steadfast: Only by steadfastly executing your strategy can you truly obtain the positive expected value of the system. Be simple and clear: In the long run, simple systems are more viable than complex systems.  $BTC