It's understandable to feel discouraged after a setback like failing, but it's important to remember that one instance of failure doesn't define you. Here are a few steps you can take to move forward:

1. **Reflect on the Experience**: Try to understand what led to the failure. Was it truly just laziness, or were there other factors at play? Understanding the root cause can help you address it more effectively.

2. **Set New Goals**: Use this as an opportunity to set new, achievable goals for yourself. Break them down into smaller, manageable tasks.

3. **Create a Plan**: Develop a clear plan of action to achieve these goals. This could include creating a study schedule, setting daily or weekly targets, or finding ways to stay motivated.

4. **Seek Support**: Don’t hesitate to reach out for help. This could be from friends, family, teachers, or mentors who can provide guidance and encouragement.

5. **Practice Self-Compassion**: Be kind to yourself. Everyone makes mistakes and faces setbacks. It’s part of the learning process.

6. **Stay Positive**: Maintain a positive outlook. Celebrate small victories along the way to keep your motivation high.

Remember, every step forward is progress, no matter how small. You have the ability to turn this situation around and achieve success.