I'm on day three of mindfulness. First two days went great. When I start to pick my cuticles or even rub the edges of my fingernails, I just stop. I'm trying to find a small notebook or even a number counter to "keep score." If I can do this for 90 days, I think I will have kicked the habit. I seem to be able to stay aware of what I'm doing. When I tried to stop chewing on my mouth a few years ago, this was not the case but one day, I just stopped. This was probably due to taking the right medication. Also, I'm being very careful to take extra medication if I feel anxious.
Best wishes to all. Remember to treat yourself like a beloved friend!