Robert Kirby has been married for forty years, and happily. And when asked what keeps his relationship strong even after all this time, he replied with a simple piece of advice – know when to shut up. Kirby spoke with the Salt Lake Tribune, and shared his advice for couples. He suggests knowing the difference between a private thought and something to share. That includes your opinion of problems at hand. Just accept who and what happening, and get through it. And you can never try to stop your spouse from becoming the kind of person they want to be. Read the full article: Kirby’s (successful) marriage advice: Figure out when to shut up