It could mean you're depressed
While there’s little evidence that complaining itself causes depression, it may be a symptom of underlying mental health issues. And kvetching certainly isn’t a useful coping mechanism for dealing with depression.
"The more attention you pay to your own complaints, the more you’re stuck in a cycle," Dr. Saltz adds. "That positive reinforcement keeps the negative thoughts alive." Deploring life’s little difficulties is an unhealthy way to address them, and may leave you struggling to find happiness.
How to break the complaining habit
The occasional vent session won’t kill you, but how you complain can make a big difference in your life.
First, figure out what’s driving the complaints. "Awareness of where it’s coming from is a good chunk of the battle," says Dr. Saltz. "So many people are unable to be self-analytical and think about what complaining means to them." Ask yourself whether you’re complaining to seek attention and gain understanding, or actually solve the problem. If it’s the latter, make sure you’re directing your complaint to the right party -- don't complain to your partner that the DMV is horrible and inefficient, since she's nice enough to listen to you talk about the DMV at all.