a vicious circle
Meaning: If you're in a vicious circle you're in a situation in which the solution to one problem becomes the cause of another one, and the solution to that one causes the first problem to occur again.
- If I quit cigarettes I put on weight, and if I put on weight I get depressed, and if I get depressed I start smoking again. It's a vicious circle.
- I'm in this vicious circle where the more I work, the more I spend on rewarding myself for all the hard work, so no matter how hard I work, I never save any money.
You could be in a vicious circle if the solution to one problem becomes the