It's great that you want to focus on self-improvement and find peace and happiness within yourself. Here are some steps you can take to achieve a peaceful mindset and move on from your feelings for her:

1. Accept and acknowledge your emotions: It's essential to recognize and accept your feelings for her instead of suppressing them. Allow yourself to process your emotions and understand that it's okay to feel this way.

2. Practice self-care: Focus on taking care of yourself physically, emotionally, and mentally. Engage in activities that bring you joy and relaxation, such as exercise, hobbies, spending time with loved ones, and practicing mindfulness or meditation.

3. Set boundaries: Establishing clear boundaries is crucial in moving on from someone. Limit or cut off contact with her to give yourself enough space and time to heal.

4. Reflect on the relationship: Take time to reflect on the relationship and identify any patterns, red flags, or lessons you learned from it. This will help you gain clarity and prevent repeating similar mistakes in the future.

5. Surround yourself with support: Reach out to friends, family, or a support group who can provide emotional support and understanding. Talking about your feelings can be relieving and can help you gain new perspectives.

6. Focus on personal growth: Set goals for yourself that align with your passions and interests. Invest time and energy into personal and professional development by learning new skills, expanding your knowledge, and pursuing hobbies or activities that bring you fulfillment.

7. Explore new opportunities: Open yourself up to new experiences, adventures, and new relationships – whether they're platonic or romantic. Stepping out of your comfort zone and embracing new opportunities can help you shift your focus away from the past.

8. Practice gratitude: Cultivate a grateful mindset by regularly acknowledging and appreciating the positive aspects of your life. Practicing gratitude can shift your perspective towards a more positive and contented state.

Remember, healing takes time, and everyone's journey is unique. Be patient with yourself and embrace the process. Over time, by prioritizing self-care and personal growth, you will gradually find peace within yourself and move forward towards a happier and fulfilling life.