Enlist the help of someone to act as your mentor or coach - someone to be accountable to. This is very important. A coach or mentor will help you through this by giving you honest encouragement and reminding you why you started this quest in the first place. Take pride in every forward step you take and give yourself credit for it. When you do have a down moment, or hit a bump in the road, take time to figure out what's happened, revise your plan if needed and get going again.