Your dream seems rich with symbolism and reflects various aspects of your life, including themes of access, support, and perhaps some feelings of inadequacy or anxiety about missing opportunities.

1. Green Wristband: The green wristband represents access and permission, possibly symbolizing your desire for acceptance or validation in certain areas of your life. Green often signifies growth and renewal, indicating that you may be entering or hoping to enter a new phase or opportunity.
2. The Woman in the Car: The woman accompanying you may symbolize a supportive figure or aspect of yourself that encourages you to pursue new experiences. Her guidance in showing the wristband suggests that you may be seeking help or advice from others in navigating your path.
3. Forgotten Wristband: Forgetting the wristband on your second attempt to enter the event may symbolize feelings of anxiety about being unprepared or not equipped to seize opportunities. This could reflect real-life situations where you may feel you are not ready or fear missing out.
4. Climbing the Hill: The action of climbing a steep hillside made of straw can represent the challenges you face when trying to achieve your goals. The straw might symbolize fragility or instability, suggesting that while you are making progress, there may be underlying concerns about the solidity of your achievements or the path ahead.
5. Bald-headed Man: The transformation of your mother into a bald-headed man may indicate a shift in your perception of authority or support. It could symbolize a desire for guidance in a different form, as you navigate these challenges. The fact that he offers to retrieve the wristband shows that support is available, even if it comes in unexpected forms.
6. Overall Theme: The dream overall suggests a journey of self-discovery and the importance of seeking help when needed. It may highlight your aspirations and the obstacles you perceive in reaching them. The recurring theme of access could indicate a yearning for new experiences and the validation that comes with them.

Advice: Reflect on areas in your life where you feel unprepared or anxious about seizing opportunities. Consider reaching out for support from friends or family, much like the woman in your dream. Embrace the process of growth, and remember that it’s okay to ask for help in navigating your journey.