You get discouraged. You start to overeat if you’re trying to lose weight, reconciling that it's never possible for you to achieve the goal as it's in your genes or you plainly don't have the self-control.
You begin to put aside the whole notion of weight loss. Predictably, you start to gain back all the weight you dropped and more. This makes you even more depressed and you start devouring still more. At some stage down the road, you get a different urge to lose weight.
You start up the goal quest once more, more determined than ever. All the same, past events duplicate themselves and soon you're back where you started, if not in a more deplorable place.
Have you ever had an experience where you pursued a goal totally, only to distinguish you never truly required it?
As you ascertain your goal, be unclouded on your fundamental motives. Your goal should be something that you truly wish, and not what others wish for you. If you feel the goal seems unachievable, it's because you haven’t exposed the fundamental set of patterns and paths that let you achieve it. When you successfully do that, you'll discover that the goal is extremely accessible if you have the right knowledge and tools.
Goal achievement is but one stop; the journey is the longest of the whole procedure. You have to savor your journey.