Lets use the example of someone experiencing excessive worry to illustrate the Twelve Nidanas of dependent origination.

1. Ignorance (avijja): The person lacks understanding of the true nature of reality and the causes of their suffering.
2. Mental formations (sankhara): Due to ignorance, the person forms habitual patterns of worrying about potential future outcomes.
3. Consciousness (viññana): The persons consciousness becomes conditioned by these mental formations, making them prone to excessive worrying.
4. Name and form (nama-rupa): This worrying manifests in the form of physical tension and emotional distress.
5. The six sense bases (salayatana): The persons sense organs interact with their internal mental states (thoughts and feelings) and external world experiences.
6. Contact (phassa): The persons worrying arises as a result of encountering situations or internal mental states that trigger negative thoughts and feelings.
7. Feeling (vedana): The person experiences unpleasant emotional and physical sensations (such as a racing heartbeat or feeling dread) as a result of their worrying.
8. Craving (tanha): The person craves relief from their unpleasant feelings and desires to control or minimize the situations that trigger worrying.
9. Clinging (upadana): The person becomes attached to their worrying and the desire to control or minimize the situations that trigger it, reinforcing the cycle of worrying.
10. Becoming (bhava): This clinging to worrying reinforces the persons habitual patterns and karmic tendencies, deepening their attachment to worrying that fuels their fears.
11. Birth (jati): The persons excessive worry manifests in the form of intrusive and repetitive thoughts about possible negative outcomes in everyday activities and anticipations about the future, which can lead to a decline in their lifes quality.
12. Old age and death (jara-marana): Unaddressed excessive worrying can lead to physical, mental, and emotional suffering, perpetuating negative consequences.

In this example, we see how the Twelve Nidanas can be applied to explain the arising and perpetuation of excessive worrying. Through understanding the interdependence of the Twelve Links, a person can cultivate mindfulness and compassion towards oneself while developing the skills to help them effectively address their worries, ultimately leading to greater peace and freedom from suffering.

How to break cycle at each point:

To break the cycle of excessive worrying at each point, the following practices can be helpful:

1. Ignorance (avijja): Develop insight into the true nature of reality and recognize that worrying arises from your perception of reality, which may not reflect objective facts. Practice mindfulness to cultivate awareness of your thoughts and feelings.

2. Mental Formations (sankhara): Cultivate healthy mental habits by replacing negative thought patterns with positive ones. Repeatedly practicing healthy thought processes can help break the karmic cycle of worrying.

3. Consciousness (viññana): Cultivate mindfulness to become aware of how your thoughts and feelings shape your consciousness. Mindfulness can help you recognize the patterns of worrying in your mind and interrupt them.

4. Name and Form (nama-rupa): Practice relaxation techniques or physical exercise to reduce physical tension and stress. This can help break the cycle of worrying that manifests in the form of physical discomfort.

5. The Six Sense Bases (salayatana): Recognize that worrying arises in response to external triggers, such as things you see or hear. Practice mindfulness to recognize these triggers and remain non-reactive to them.

6. Contact (phassa): Practice detachment from situations that trigger worrying by accepting the impermanence of all things. Understand that everything changes over time, and there is no use holding onto fears of potential outcomes.

7. Feeling (vedana): Practice mindfulness to recognize and accept the unpleasant feelings associated with worrying. Practice non-judgmental observation of your feelings and avoid getting caught up in trying to control them.

8. Craving (tanha): Practice non-attachment by acknowledging that the desire to control or minimize situations that trigger worry can reinforce the cycle of worrying. Instead, focus on accepting the present moment and letting go of the need to control the future.

9. Clinging (upadana): Practice releasing attachment to worrying by recognizing that excessive worrying can be exhausting and contribute to further suffering. Cultivate self-compassion and focus on developing healthy thought patterns.

10. Becoming (bhava): Practice interrupting the cycle of worrying by consciously choosing to engage in healthy thought patterns and behaviors. Become aware of the power of your thoughts to shape your reality.

11. Birth (jati): Practice mindfulness and acceptance of the present moment to reduce the occurrence of intrusive and repetitive thoughts. Bring your attention to the present moment and practice letting go of worries about the future.

12. Old Age and Death (jara-marana): Practice mindfulness and non-reactivity to the physical, mental, and emotional consequences of worrying. Understand that worrying perpetuates negative consequences and accept the inevitability of change and impermanence.

In summary, breaking the cycle of excessive worrying involves developing insight, mindfulness, healthy thought patterns, and non-attachment. By changing the way we perceive and respond to external stimuli, we can interrupt the habitual patterns of worrying and bring peace and clarity to our lives.