"Pistol" Pete Pearson underwent psilocybin-assisted psychotherapy to ease his end-of-life distress, and calls it a game-changer. Rather than cursing the things he can no longer do, he's grateful for the time he has left. Psilocybin is still illegal in Canada, but Health Canada has invested millions into research by UHN psychiatrist Dr. Joshua Rosenblat. He advises against using psilocybin illegally, like Pete did – but says legalization may be just around the corner.