A balance transfer can certainly be a good idea, depending on a person’s situation.
If you feel stifled by a credit card with a high balance that accrues nonstop interest, it might be time to transfer this balance to a credit card with a low or non-existent interest rate.
However, it would help if you had a plan for yourself that allows you to pay off the entire balance before your card reverts to its regular interest rate — otherwise, your plan could backfire.