Welcome to the forum! I love the concept of "Trust the Process". And that can be difficult - no matter what you apply it to. What do you consider "the process" of poly to be?
As far as talking about other relationships- not sure if that is a mono or poly thing. Some people are just more private about relationships in general than others. I enjoy talking about my relationships and I enjoy hearing about other relationships. Because I am interesting in hearing about it, my SO shares a lot with me about his secondary relationship. I have more relationships than he does and I do share with him as long as he seems to be interested!
The key to life is in being fully engaged and peacefully detached simultaneously and authentically in each moment.