The moment you can visualize being free from the things that hold you back you have indeed begun to set yourself free.
For a person to really grab a hold of life they have to really visualize the things that they want out of life. Many people do different things, and we have to be willing to seem a little crazy to everyone else so that we can establish that what we see is real. Not everyone else will be able to see what you see about your vision, and a lot of times it is hard for people to do this and not feel ashamed.
There is nothing to be ashamed of when it relates to the goals in life you have, because only you can make a life for yourself. So be aggressive, speak about your goals all day everyday, keep them in front of you, talk about them with others whether you think they will understand or not, and you will start to see things really happen in your life.