I'm thinking of reverting back to old habits
What's the habits you're talking about?
I once had a habit of biting my nails.
Well, you bothered to get rid of that habit for a reason. You likely don't want the habit back.
I'm going to be honest; biting my nails helps me with my anxiety. .
There are alternate ways to cope with your stress or anxiety like taking some professional help or talking about your problems with your family. Falling into old habits will not solve any of your problems.