It just means know how far you can go with all the goals you set. Listed below are some of the major reasons goal setting goes wrong. Outcome goals can be set instead of performance goals. Goals can be set unrealistically to high. Conversely goals can be set so low that you feel no challenge of benefit in achieving the goal.
Goals can be so vague that they are useless.
Goal setting can be unsystematic, sporadic, and disorganized. Too many unprioritized goals may be set, leading to a feeling of overload. By avoiding the above problems and making sure you set your goals effectively, you can achieve and maintain a strong forward momentum. If you have failed at one of your goals try to learn from this failure. Don't always look at it as a failure, look at it as a learning process.