When a client reports insomnia due to increased stress, what is the nurse's priority action?

Determining the source of the client's stress is vital as it allows the nurse to understand the underlying issues contributing to the client's insomnia. By identifying the specific stressors, the nurse can tailor interventions that address the root cause of the insomnia, rather than just managing the symptoms. This approach is more comprehensive and can lead to more effective long-term solutions for the client’s sleep difficulties. Once the sources of stress are identified, the nurse can then suggest appropriate coping strategies, relaxation techniques, or lifestyle modifications, such as reducing caffeine intake or recommending a sleep hygiene routine. This initial assessment is crucial in creating a personalized care plan that effectively addresses the client's situation.