If you are going to set a goal, then you need to stick to it. If it is a long term goal, make some smaller goals that are easy to reach so you can accomplish your long term goal. If it is a short term goal, then you can make sure you are staying focused and don't go astray. To make things easier, then you can make a checklist so you can mark off the goals you have reached, this will help you stay on track and you will know what else you need to accomplish on the way.