No, substituting one form of self-harm for another, is no realistic solution. Besides, head trauma can be pretty dangerous. You'll need a better solution, I'm afraid, ... preferably one that doesn't involve hurting yourself. I actually started self-harming by thumping my arm until it resembled a lovely rainbow of colors, but eventually, my arm just became a bit numb and I couldn't feel it much, so I went to something else, ...

Self-harm of any psychologically unhealthy, well-recognised kind, is not acceptable.