In my spiritual practice, I have applied two basic practices what I call emotional release practice to heal emotional wounds and pains, and Ego observation practice to release our egos. Both these practices use the observer effect as a fundamental basis in dealing with our emotions and subsequent reaction to those emotions.
The observer effect is explained through a division of physics called, Quantum Physics. The dynamics of a quantum system under continuous observation is described by a quantum stochastic master equation known as the Belavkin equation. In quantum mechanics, which deals with very small objects, it is not possible to observe a system without changing the system, so the observer must be considered part of the system being observed. A key topic is that of wave function collapse, for which some interpretations assert that measurement causes a discontinuous change into a non-quantum state, which no longer evolves. Once we have measured the system, we know its current state and this stops it from being in one of its other states. This means that the type of measurement that we do on the system affects the end state of the system.
Similarly, the attempt to observe our emotions without reacting to them in the emotional release and ego observation practices allows us to change our emotion landscapes stopping the evolving of one state to another state, that is changing our previous emotional pattern to a new emotional pattern. This explains why we practice observation in spiritual practice to effect change to our emotional landscapes from one state that we have been conditioned to a new state that we want to experience.
My disclaimer here is that I am not a physicist, but only took physics and quantum mechanic as an undergraduate for my science major. I do not have expertise in this subject area, but only theorize what I know through my personal experiences. Hope you find this interesting! (Copyright 2013 Awakening Journey with All Rights Reserved)