Qigong is my thing nowadays.
Tell me how that works out...
As for mind hacking, yea it's dangerous. It should always be approached with caution. However, learn from others mistakes instead of making the same old mistakes.
Weed is great for relaxing and is perfectly safe in moderation. Brainwave alteration is temporary usually but can be dangerous. Other drugs, I'm not sure how safe most are. Salvia seems to have some issues with safety. Weed has been used for many centuries and never killed anyone. Not sure if Salvia killed anyone or not. Cocaine and other hard drugs, STAY AWAY.