Some things, some people, really some ideas, must be kept in the depths of their hearts, even if they are rotten into ashes, they must be rotten in their hearts forever, especially before success; including some methods or ideas, plans, and so on for success.
Some things you say, may move the tentacles of others, including some things, some words originally said plain, but some people think that it has caused some slander to them, or insults and harm to the soul, so some words still have to endure their own hearts, because you don't know what kind of goods the person you think you can "spit out" is.
Besides, we can't see everyone clearly, including your parents, spouse, brothers and sisters. Therefore, we can't let our own ideas express the original design of ourselves, or after expressing it, let the other party understand and agree.
Otherwise, it's a stupid cognitive idea, because you can't control the person who listens to you or the person around you, what kind of person he or she is. He (she) is a narrow-minded or extreme person, may cause you a lot of harm, even if it is a small thing, you let him know, he will do everything to obstruct, or behind the back of the trip, causing you to bring a lot of situations of passivity, this passivity is directly harmful.
Some of the things that are truly known can only be understood after being hurt. The growth process of each of us is actually a process of "paying tuition", and the more we pay, the more we can understand, so we will suffer less harm.