Day trading can be a challenging and high-pressure activity, and it's easy to make mistakes that can be costly. Here are some common day trading mistakes to avoid:

1. Not having a trading plan: Trading without a plan is a recipe for disaster. Before you start trading, develop a solid trading plan that outlines your strategies, risk management practices, and goals.
2. Overtrading: Overtrading can lead to poor decision-making and unnecessary losses. Stick to your plan and avoid the temptation to make trades just for the sake of trading.
3. Failing to manage risk: Risk management is critical in day trading. Set stop-loss orders and use position sizing to limit your losses and manage risk effectively.
4. Letting emotions drive your trading decisions: Fear and greed can be powerful emotions that can cloud your judgment and lead to poor trading decisions. Stay disciplined and stick to your plan, even in volatile market conditions.
5. Not being prepared: Day trading requires preparation and focus. Make sure you have access to real-time market data and news, and have a clear understanding of the assets you're trading.
6. Chasing losses: Don't try to make up for losses by making more trades. This can lead to impulsive decision-making and even greater losses. Stick to your plan and trust your strategies.
7. Neglecting your mental and physical health: Day trading can be mentally and physically demanding. Take breaks when needed, stay hydrated, and get enough sleep to stay focused and alert.