Been doing tai chi for over 20 years every single day. It is amazing and you are dead right, you have to be in the right frame of mind.I found that practicing TaiChi, that if my mind started to wander or go around in circles, that i'd tend to lose balance enough that i felt as if i'd tip over. It's about the only form of meditation where ol monkey mind could be caught early. I do feel a need to start practicing that, again.