Negative comments are usually much less useful also. They are usually one of those:
1) Animosity (the person dislikes you)
2) A broad description of a mistake
3) Different taste
Only (2) can be somewhat useful, although (3) is permissible sometimes I guess. Often the person already knows he might be doing something wrong or not good enough; simply pointing it out leads nowhere, knowing what not to do still leaves unancessibly vast possibilities.
It seems much better to directly (and probably privately) suggest alternatives, offer solutions, etc.
Diverging should be discussed under some circumstances though, specially if you clarify your rationale (or when discussing unconsequential things like foods and such).
Overall pointing out solutions and affirming good values, qualities, outcomes if much more useful (and has the bonus of being charitable, even affectionate).
1) Animosity (the person dislikes you)
2) A broad description of a mistake
3) Different taste
Only (2) can be somewhat useful, although (3) is permissible sometimes I guess. Often the person already knows he might be doing something wrong or not good enough; simply pointing it out leads nowhere, knowing what not to do still leaves unancessibly vast possibilities.
It seems much better to directly (and probably privately) suggest alternatives, offer solutions, etc.
I like this opinion piece about this:
http://fanaro.com.br/negative-language-why-you-should-avoid-...
Diverging should be discussed under some circumstances though, specially if you clarify your rationale (or when discussing unconsequential things like foods and such).
Overall pointing out solutions and affirming good values, qualities, outcomes if much more useful (and has the bonus of being charitable, even affectionate).