Hello there,

To improve your casing abilities, gradually introduce harder cases to your practice, focus on fundamental concepts, and learn from your mistakes.

To maintain consistency and avoid bad days, maintain a positive mindset, be prepared and confident, stay organized, and stick to a routine that balances preparation and rest.

For additional suggestions, research industries, practice math, do mock interviews, and practice with a variety of case types.

Specifically I would recommend you do the below:

• Gradually introduce harder cases to your practice. This will help you build your problem-solving skills and adapt to more complex scenarios. Start by practicing medium-level cases, and then gradually increase the difficulty as you become more comfortable.
• Focus on fundamental concepts. Tackle challenging cases by revisiting and reinforcing core consulting concepts. This will give you a stronger foundation to approach diverse cases. Make sure you understand concepts like break-even analysis, sunk costs, and opportunity cost.
• Learn from your mistakes. When you encounter difficult cases, review your performance afterward. Identify areas where you struggled and work on improving those specific skills or concepts. This will help you avoid making the same mistakes in the future.
• Maintain a positive mindset. Approach each case with a positive attitude. If you face a challenging case, treat it as a learning opportunity rather than a setback. The interview process is long and recruiting can be less responsive so remember that it is a marathon. This will help you stay motivated and focused.
• Be prepared and confident. Confidence often comes from being well-prepared. Continuously practicing a wide range of cases will boost your confidence and help you handle unfamiliar scenarios. Make sure you are familiar with the case interview format and have a solid understanding of the consulting process.
• Stay organized. Keep a structured case log to track your performance, areas of improvement, and lessons learned. This can help you see your progress and identify patterns in your performance. It can also be helpful to review your case log before an interview to refresh your memory on specific cases or concepts.
• Stick to a routine that balances preparation and rest. Overworking yourself can lead to burnout, negatively impacting your performance. Make sure you are getting enough sleep and taking breaks throughout the day. It is also important to schedule time for relaxation and fun.
• Practice math. For mathematical concepts and unit conversions, practice regularly. Try mental math exercises and focus on improving your speed and accuracy. A solid foundation in math can make a big difference in case interviews.
• Do coach mock interviews. Simulate interview conditions by doing mock interviews with coaches. This will help you get accustomed to the pressure and time constraints of a real interview. It can also be helpful to get targeted feedback on your performance from an interviewer's perspective.
• Practice with a variety of case types. Ensure that your practice covers a variety of case types, such as profitability, market entry, pricing, and operations. This will prepare you for any case that comes your way.

I hope this is useful!