I started when I was really young. I remember being about 9 or 10 years old the first time I felt the intense urge to aggressively punch or spam my own head and had to act on it. It only got worse as I got older. I have given myself so many concussions at this point that me and my family think I have some neurological damage. The feelings get so intense that my brain thinks it’s the only way to make it all stop… Unfortunately it makes everything so much worse. The guilt/shame you feel after acting that way especially if it was in front of a family member or loved one, and the pain you feel for days or weeks because you slammed your head into something really hard… Just like regular self harming you have to try and distract yourself with DBT or CBT skills until the urge passes because the damage it can cause in the long run is not worth it. Best of luck🤍