Helping clients learn to tolerate their partner's distress can be a crucial aspect of couples therapy. It promotes empathy, understanding, and ultimately strengthens the relationship. Here are some strategies you can employ:

1. Normalize Feelings: Begin by normalizing emotions. Explain that it's natural for partners to experience distress or strong emotions from time to time, and it doesn't necessarily indicate a problem in the relationship.

2. Educate About Triggers: Help clients identify common triggers for their partner's distress. Understanding what sets off their emotions can lead to greater empathy and better communication.

3. Practice Active Listening: Encourage active listening skills. This means giving full attention, avoiding interruptions, and validating the partner's feelings without immediately trying to solve the issue.

4. Empathy Building Exercises: Engage in empathy-building exercises. This could involve role-playing where each partner takes on the other's perspective to better understand their emotions.

5. Validate Emotions: Teach clients the importance of validating their partner's emotions, even if they don't understand them or agree with them. Simply acknowledging their feelings can go a long way.

6. Encourage Open Communication: Create a safe space for open and honest communication. Help clients express their feelings, concerns, and needs without fear of judgment or criticism.

7. Use "I" Statements: Teach clients to use "I" statements to express themselves. This encourages personal responsibility for feelings and avoids blaming the partner.

8. Avoid Defensiveness: Help clients recognize defensive behaviors and work towards replacing them with more constructive responses. Defensiveness can escalate conflict and hinder empathy.

9. Practice Mindfulness: Encourage mindfulness practices to help clients stay present and non-reactive in the face of their partner's distress. This can prevent knee-jerk reactions and allow for more thoughtful responses.

10. Set Boundaries: Help clients establish healthy boundaries to protect their own emotional well-being while still being present and supportive for their partner.

11. Highlight Strengths: Remind clients of their own and their partner's strengths. This can instill confidence in their ability to navigate difficult emotions together.

12. Explore Attachment Styles: Understanding attachment styles can shed light on why partners react to distress in certain ways. This insight can foster compassion and empathy.

13. Practice Patience: Encourage clients to practice patience with themselves and their partner. Tolerating distress is a skill that takes time and effort to develop.

14. Seek Professional Guidance: If the distress is chronic or particularly challenging, suggest seeking professional help from a therapist or counselor who specializes in couples therapy.

Remember to be patient and supportive throughout the process. Developing the ability to tolerate a partner's distress is a journey that requires time, effort, and practice.