Gratitude letters are written expressions of appreciation directed towards someone who has positively impacted your life. These letters can be addressed to friends, family members, mentors, or even strangers. The purpose is to acknowledge their contributions and the difference they have made, fostering a sense of connection and positivity. Writing a gratitude letter can enhance emotional well-being and strengthen relationships. It encourages reflection on the positive aspects of life and promotes a mindset of appreciation. This practice is often used in therapeutic settings and can be a simple yet powerful tool for personal growth and happiness.