Answer:
There are two main problems most people have with goals. One has to do with goal-setting itself, the other with the process of achieving it. So, breaking it down:
Problems with goal-setting:
First of all, the goal must have meaning to the individual struggling to achieve it. Any worthy goal is difficult to achieve, and we have to fight our energy-saving urges to make progress towards it (specially today, with so many distractions that are so much more comfortable than actually working).
Picking a worthwile goal and motivating yourself is the simple part.
