The following is mentioned by Seth Godin about complaining using a positive language.

“In this economy, I’m lucky to have this job, and it’s almost perfect. It would be even better if…”

or

“I love owning this device, it lets me manage my life and contacts, and the one thing that would make it even better is…”

It’s important to leave out the word “but.”

The fascinating thing about this approach is that not only does it make you happier when you say it, it increases the chance that the person you’re complaining to will actually do something to help you.