Most people think of vice as a bad habit, like smoking cigarettes or biting your nails. But in reality, vice is anything that's harmful to you — physically, mentally, or emotionally.
Some vices are obvious, like drugs and alcohol. Others are more subtle, like watching too much TV or eating unhealthy foods. And some vices can even be good for you in moderation, like exercise or spending time with friends and family.
The important thing to remember is that any vice can become harmful if it's not kept in check. So if you have a vice that you can't seem to control, it might be time to seek help from a professional.