Lilo, I think one has to be more more discreet when discussing change. Changes of basic personailty or, as some would same, of heart are probably infrequent without a significant intervening event. However, behavior is a different story. You may have the most hostile thoughts on the planet, but if you act nicely, so what.

It's usually a good idea to play the percentages as long as one recognizes that nothing is 100%. If you are willing to adjust when things are less than 100%, then that can be considered change at any stage of life. Of course, as you indicate by your question, one has to recognize when what you are used to doing may not work this time. Some don't recognize that.