change.
it can be a challenge or a pain.
hate it when someone changes for the worse,
you doubt yourself when you're the one who needs changing.

how do you decide what can be changed and what shouldn't?
how do you decide what characteristics are your core identity and which ones are constantly changing with age?

it's really tough,
for both parties to go through with the change.
adapting is something that takes time and alot of patience.
be prepared for more mistakes to come along.
people will do "test-runs" with their changed selves.
you on the receiving end can't expect them to get it right on their first try.
every change is a "prototype".
everyone is a "prototype".
new mistakes are bound to happen.
old mistakes may happen again.
irritation for the receiving end, frustration for the giving end.

it all boils down to one thing for both parties:
patience.