"I...lower myself into the water until I'm completely submerged, and then I let out a scream of total frustration. I come up for air and then submerge myself again and scream again. No words, just pure desperation. I carry on screaming as long and as loud as I can and I don't stop until I am hoarse. I cannot find any other way of dealing with this non-stop barrage of thoughts and negativity."
"I am so desperate to get it right, so driven by the annoyance and fear of not getting it perfect, that the anger I feel inside begins to express itself physically. I don't know what it is, but my frustration is so intense I start shouting at the walls, screaming obscenities."
"When my left foot lets me down, I stamp down hard on it. At one stage, I am so livid that, before I know it, I am sinking my teeth into my hand, trying to bite right through the skin between my thumb and index finger."
"I have visualised perfect outcomes of every kick, but when my practice doesn't match that, I have to take it out on something, so I start tearing my T-shirt apart. This becomes habitual; I start getting through way too many T-shirts."
Available at all good book shops and psychiatric clinics.