
Ultimately, it all comes down to how badly you desire to live a concentrated life. Most people don’t desire it badly enough and hence never reach a state of concentration where they can manifest the life that they want. They can concentrate for brief periods of time but the levels of concentration needed to create changes in life is never attained because the desire is not there.
If you really want to develop unwavering focus you must first have an intense desire for it and then stop at nothing until you are able to hold awareness in single-pointed focus.