因为有了信念

Group 1 - The core belief acts as a guiding light, providing direction and hope during challenges in the journey of playing badminton [1] - The initial struggles with serving and the temptation to give up highlight the importance of perseverance and self-encouragement [1] - Consistent practice and dedication lead to improvement in skills, demonstrating that hard work pays off [1] Group 2 - Overcoming difficulties through belief and effort emphasizes that having faith in oneself is crucial for achieving dreams [2]