When you set goals for yourself, it is important that they motivate you: this means making sure that they are important to you, and that there is value in achieving them. If you have little interest in the outcome, or they are irrelevant given the larger picture, then the chances of you putting in the work to make them happen are slim. Motivation is key to achieving goals.
Goal-setting theory was formulated based on empirical research and has been called one of the most important theories in organizational psychology.[2] Edwin A. Locke and Gary P. Latham, the fathers of goal-setting theory, provided a comprehensive review of the core findings of the theory in 2002.[3] In summary, Locke and Latham found that specific, difficult goals lead to higher performance than either easy goals or instructions to "do your best", as long as feedback about progress is provided, the person is committed to the goal, and the person has the ability and knowledge to perform the task.[4]