n e u r o g e n e s i s
This has lead to the fields of Neurogenesis (growing new Neurons) and Neuroplasticity (Altering Neuron structure in response to stimulus) .
In much the same way as Epigenetics gives us much greater possible control over who we are through controlled gene expression, Neurogenesis allows us to consider that our brain can, and will, grow and adapt to the stimuli it is exposed to, and hence that our sense of self and our capabilities are variable according to self development strategies which we can choose to adopt.
Here is a stunning video from Stanford University giving us a gimpse of the beautiful complexiy of the human brain
This video below gives us an animated glimpse of what happens as we learn new skills...generating new neuronal connections inside the brain, so the brain is infinitely adaptable according to the stimulus it recieves. What becomes extraordinarily interesting is the manner in which the Neurons axons grow towards their destination synaps...extending out like brances in space they orientate themselves in an intentional manner towards the completion of a synaptic junction which 'hard wires' the learning, making it easier in the future ..