Well, I suppose it depends what you use the card for. If it is to buy things that you cannot afford and run up debt, then it might be a good idea to just cut it up or cancel it.
I, as I am lucky enough to be able to do, you just use it because it is a safe way of buying things (especially online) and you can pay it all off every month then hang on to it.
Do you get emotionally attached to the plants in your garden ?
Only 50% of middle age adult manage more than 1 brisk 10 min walk a month.

I really don't like the idea of having a credit card but the issue you raised is really important
