When I was 30, I suffered a brain injury and developed tinnitus in both ears. The damage stemmed from using large headphones and constantly listening to drum and bass music at high volumes. Over time, I began to hear creaking and cracking in my ears, a constant reminder of the harm caused.
I used to be a programmer, but since the injury, I've found it nearly impossible to concentrate on programming anymore. I also believe that my use of weed played a role in amplifying the damage to my ears and brain, as the pleasurable effects while high likely contributed to me pushing my limits.