Im not one to comment on posts ever but I saw this post and I understand where your coming from. The reality is its not a matter of if you can do it but rather when. Correct my if i'm wrong but the problem you might be having is that your not taking it day by day. Imagine your goal everyday then take the steps you need to one day at a time. Have faith in yourself rather than worry about all of it now. Then each day you can appreciate the progress rather than constantly worrying about the end result. Fear is not real it causes you to imagine things in your head that have not happened and if you let it consume you then it becomes reality.