Visualisation is a powerful tool.
When you visualise, your mind and body quite literally prepare for the outcome you see in your minds eye, so through training your mind to visualise you can steer your life in the direction you want.
When we visualise the outcome can literally materialise, that's an amazing thought isn't it?! For me this reinforced the idea that I am the master of my own experience. If we are conscious of our thoughts and use tools such visualisation and training our minds to focus on positive thoughts we can create a life that is magical and beautiful.