Real talk. This is not a golden bar on writing tip. It’s an observation. Again I find it true at least for whenever I’m writing something I find interesting or just okay how is he going to react to this problem in his way.
You have to write it out to find out. The question of what happens next can’t be answered by thinking about it. You have to write it out and discover it. Don’t get me wrong once a charecter is established that charecter can only react in a certain way.
Change happens to charecter but only as a means of adjusting to new environment or growth.