James Brolin recently shared his secret for success in his 25-year marriage to Barbra Streisand. While signing autographs outside of ABC Studios, Brolin shared what works in his relationship and what doesn't. One thing that does work in his relationship? Therapy. Brolin spoke about his positive experience of bringing in a third party to help he and Streisand sort out their differences. "Have a mediator," said Brolin. "Learn to negotiate." The actor also mentioned the importance of vulnerability and honesty in his marriage, saying crying together is one thing that keeps their marriage alive.