I find as long as I acknowledge the truth of something, then that's it. I know what it is and then I can operate. But if I overestimate the downside of something or the challenge of something and I get too obsessed about the difficulty of it, then I don't leave enough room to be open to the upside, the possibility.
When one has seen something of the world and human nature, one must conclude, after all, that between people in like stations of life there is very little difference the world over.