人生无常。
下一秒会不会还健在，都是天意。

珍惜当下、珍惜所有，时时刻刻都用心体会，才是最重要。

And, please respect the patient's feelings even if you cannot understand them. Respect that they will need time to come to terms and accept their new reality.
Just support the person with patience and gentleness.

And look not on the person's illness/disability, because the person whom you knew previously did not disappear. They do not need dramatic changes to their relationships when their life just changed so.