To overcome lack of self-confidence, low self-esteem, and fear, you can try the following strategies:

1. Practice self-care: Take care of your physical and mental well-being by getting enough rest, eating healthily, exercising, and engaging in activities that bring you joy.

2. Set realistic goals: Break down your goals into smaller, achievable tasks and celebrate your accomplishments along the way.

3. Challenge negative thoughts: Identify and challenge any negative or self-critical thoughts that may be holding you back. Replace them with positive affirmations.

4. Seek support: Talk to a trusted friend, family member, therapist, or counselor about your feelings. Sharing your thoughts and emotions can help you gain perspective and receive encouragement.

5. Focus on your strengths: Acknowledge your strengths and achievements, no matter how small they may seem. Remind yourself of your capabilities and past successes.

6. Step out of your comfort zone: Gradually expose yourself to situations that make you feel uncomfortable or fearful. By facing your fears, you can build confidence and resilience.

7. Practice mindfulness and relaxation techniques: Engage in activities such as meditation, deep breathing exercises, or yoga to help calm your mind and reduce anxiety.

Remember, building self-confidence is a journey that takes time and effort. Be patient with yourself and celebrate your progress along the way.