Managing your own state is not the same as managing theirs

One of these is your responsibility; the other is mostly not yours to take on.

It is easy to slide from noticing your own reactions to taking charge of everyone else's. The slide feels like consideration and often is, at first: you soften a message so it lands better, you time a piece of news for a better moment. But taken far enough it becomes a project of arranging other people's feelings, which is exhausting for you and diminishing for them. It treats adults as weather to be managed rather than people who can hear things. It also tends to produce vagueness, because the surest way to avoid provoking a reaction is to say nothing clearly.

The workable division is roughly this. Your state is yours to notice and to handle, including the part of it that is spilling into how you are speaking. The conditions you create are also yours: whether you gave someone enough notice, whether you asked or assumed, whether you made it possible to disagree with you. What the other person then feels is theirs. You can care about it, you can ask about it, you can adjust what you do in response to it. You cannot be responsible for it, and trying to be usually means you have started deciding what they should feel.

This division also protects honesty. Once you are responsible for someone's reaction, difficult information becomes something to be smuggled or withheld, and people notice being handled long before they can name it. The alternative is not bluntness for its own sake. It is being clear about the substance while being careful about the conditions: the timing, the privacy, the room to respond. That combination is harder than either softening everything or saying everything, and it is the one that leaves the other person with what they need and with the standing to do their own reacting.