I believe that a truth for one person is specifically that. The truth for that one person. Doesn't mean that it's the truth for everyone. Just because one person believes that someone being around certain activities will make that person the same way, doesn't mean that 1. it's true or that 2. everyone believes it.
The truth in my Creative Nonfiction Essay for me is that having a falling out with someone close to you doesn't mean that you can't mend the problem and be close again with that person. Others might have an argument against that saying that once a relationship is over, it's over.