Here are some tips for training your brain to be more confident:

1. Reframe negative thoughts: One way to boost your self-confidence is to reframe negative thoughts into more positive ones. For example, instead of telling yourself “I can’t do this,” try saying “I may not be an expert at this yet, but I am capable of learning and improving.”
2. Practice gratitude: Focusing on the things you are grateful for can help to shift your mindset towards a more positive and confident outlook. Try keeping a gratitude journal and writing down a few things you are thankful for each day.
3. Take care of your physical and mental health: Taking care of your physical and mental health can be an important foundation for building self-confidence. This includes getting enough sleep, eating a healthy diet, and engaging in regular exercise and stress management practices.
4. Set achievable goals: Setting and achieving goals can be a powerful way to boost your self-confidence. Choose goals that are challenging but achievable, and celebrate your progress along the way.

5. Surround yourself with positive role models: Being around people who are confident and successful can help to inspire and motivate you to be more confident yourself. Seek out positive role models and try to learn from their habits and behaviors.