Is it fair to say this?

While that is a sweet comment, nothing can be promised, from ourselves. It depends on if the person takes measures to help themselves and listens to the physician’s advise.

Well the intention was good, but it does highlight what we tend to do ,which is try to make people feel better.. and sometimes that can mean we gloss over things..

Speaking as a ward sister. The word 'promise' is not advisable.

It all depends at what stage it has reached