Being constrained by the past

Just because someone has behaved in a particular way until now, doesn't mean they're going to behave that way next time.

We can find ourselves thinking "I can't say or do that because he/she will react like this".

Thinking this way keeps us, and the person we're thinking about, stuck and unable to progress.

Also, we can find ourselves reacting to what we're expecting their reaction to be, thus causing the situation that we expected.

Be open minded at all times, to all possibilities, and you might be pleasantly surprised.