I have a problem completing set goals. ne thing I can do to break through the barrier that keeps A from B ?

Like I said I have a problem sticking to goals that I have. Getting out of high school, getting a GED, driving, and helping with house payments are goals that I severly need to accomplish but still sit here, untouched. These things are what I see as my "brick wall." Anything I should keep in mind or do on a regular basis to get somewhere?