Most people don't make change because all they see are obstacles or reasons "why not" vs. "why not". Obstacles or reasons not to change can be removed a "millimeter" at a time. For example, let's say you want to change careers or start a business, but the thought seems impossible. I don't have enough money. I don't know anything about starting a business. I don't know how.
Each reason can be easily removed with my "millimeter" technique. Write down each obstacle. One day at a time, do something to remove that obstacle until it's gone. Let's take the most common reason people don't do things -- lack of money. Write that down on your obstacle list. Then much like one of those commercials where you can sponsor something or make payments, figure out how much money out of your paycheck you can set aside and save specifically to start a business or change careers or even go back to school. Begin the "millimeter process" of saving. If it's easier do something as simple as put a $1 a day. Keep saving and give yourself daily, monthly or even annual goals. Best advice: save at least six months worth of your current salary to get you properly started and give you enough time to make money -- a millimeter at a time.