Goal-setting theory says that . goals should be loosely defined and moderately challenging to maximize motivation difficult goals, when accepted, result in higher performance than do easy goals a generalized goal of "do your best" is likely to be most effective in ensuring high performance to be effective, goals set should be easily achievable for the top performers

difficult goals, when accepted, result in higher performance than do easy goals

Explanation:

Goal setting theory explains that setting of goals that are can challenge an individual together with good effort will bring about huge result.

A goal is set to give direction on what to do, its motivates an individual to do more and achieve a good result especially when challenging.

A Goa must be specific with a clear direction, it should be achievable and realistic yet challenging. A goal that is not clearly stated may not be achievable.

Challenging goals makes an individual do extra work but it brings about results that are extraordinary.