It could be a response to anxiety, as you have suggested. Perhaps that is what you meant by “nervous release.”
The fact that you are aware of these behaviors is great news. When you are aware of them, you can work to change them.
You might consider documenting how often these “micro harms” occur and what you are thinking about while they are happening. It might provide useful information about what precipitates or causes these events.
You might also find alternative ways to release your anxiety. Trying new behaviors might make a difference. The goal is to find alternative stress relieving behaviors that don’t involve self-harm.
Another idea is to consult a therapist to determine why anxiety may be present. They can also provide suggestions for new behaviors. Good luck and please take care.
Dr. Kristina Randle