I still get severe pain in my head at times, especially when I am under stress. No matter how bad it gets, all pain ends eventually. Any expert is as likely to be wrong as right. Therefore I shall primarily rely on my own judgement. Anything is possible.
Anger can be used, it's a wonderful source of energy and power.
The downside of this is probably that you might also more easily die. Since then I live my life with utmost intensity, the days are full, not to be wasted. Every day I have had is a bonus which I fought for and have earned. I've probably done more in these years than people would normally do in several lifetimes put together, and I have enjoyed my time to the full. I have no doubt this will continue.