Before investing, write down three things: how much you can lose per trade, what percentage of your capital the total position can occupy at most, and under what conditions you will exit. A stop-loss is not magic that guarantees the execution price; in extreme market conditions and when liquidity is insufficient, slippage may occur. So you should also avoid going all in, enter in stages, keep some cash in reserve, and treat leverage as a tool for amplifying losses rather than a shortcut to gains. Staying in the market for the long term is often more important than getting one bet right.