For Anamika..
When it comes to motivation, it can be broken down into two categories: negative motivation and positive motivation. Negative motivation is "push" motivation... you are trying to push something you don't like away from you. Positive motivation is "pull" motivation... you are trying to bring something that you DO want closer to you.
Negative motivation is very good for getting you moving. It provides a sharp stimulus that is congruent with out instincts... that thing is unpleasant, get away from it. Our instincts don't make a distinction, in this case, between physical unpleasantness and mental unpleasantness... either way, our instinct is just to get away.
This can work very well... if your doctor tells you that you have cancer, and that unless you do what they say you are going to die, that provides some really strong motivation to change your ways and do what they say. The motivation is sharp, strong, and focused... do what you need to (what the doctor tells you) in order to avoid something unpleasant (dying of cancer). Since motivation is linked to action by way of a cost/benefit ratio, you can see that the cost (doing what the doctor tells you) is very low in comparison to the benefit (not dying).
Negative motivation has a very definite weakness, however. It can be quite strong, enough to get you moving when other things wouldn't, but what happens when you take the negative stimulus away? The motivation dries up almost instantly.
In other words, once you feel like you are safe from whatever the unpleasantness was, there is no more motivation from that source, though you may keep up whatever changes you have made out of habit...
hope you got ur answer now...