semantics?

[erratio]

Whats the difference between a guilt trip and airing a valid concern?

It seems to me that in the one case you're telling someone something with the express purpose of making them feel like they need to act on it.. and the other.. you're telling them something which they should take into account and/or act on...?
Considering that guilt tripping is something i've sworn to avoid as much as humanly possible, while a concern is usually something which should be raised as fast as possible to avoid it becoming a huge issue.. i would really like to know the answer O_o

Comments

[erratio.livejournal.com]

see that advice would be so much more useful if i'd ask "how do you tell someone about a concern?" :p however my question was more along the lines of "when is it enough of a concern to raise and when is it just me being paranoid/insecure/whiny/a bastard/etc"