A practice consists of a performance in a situation in which results accrue which reflect the proficiency of the performance. The performance in each case is an engagement, an interrogation, a dance and response with and from a relative reality. Say that there are no in-principle limits to proficiency, but that your performances in such a practice that you are committed to enacting repeatedly are uniformly mediocre, meaning that the balance of reward and frustration skews towards the latter. This is a powerful form of subjectivation, it tells you something seemingly inescapable about yourself, especially because every ancillary performance you are able to add does nothing to change the pattern of the outcomes. It can happen that by pure grace, that is by a change which you could not have initiated, you suddenly find yourself performing at a dramatically higher level of proficiency. What feels like exactly the same performance now produces a far more rewarding result. You understand this as your having learnt something previously unsuspected about the situation which subtly alters your performance without any extra effort, or indeed with far less effort than previously, and hence you are able to continue to perform at this level with no fear of sliding back. There is still subjectivation, but it has altered in every way. You can see the 'errors' in your previous way of going about things but are just as blind and impotent in relation to the current errors which prevent you from attaining the 'next level'. The nature of subjectivation is what locks you into the level at which you find yourself.