How Does the Motivation Work?

Why do we do what we do ? It is known that we neither passively receive the external influences, nor react mechanically to the demands of everyday life, but according to certain inner requirements which determine us to be selective in relation to the adaptation's exigencies.
To understand and explain behavior, we naturally ask: why do we do what we do? What are the causes for which we adopted a certain conduct ? Is there any rationale for how we proceed?
Here are just some questions to which we do not always find suitable answers.
We ask, too: What is our inner impulses to act in a certain way? How is it that sometimes we work against us?
If we call the concept of motivation, we will be able to find answers to these questions, we will find the causes of various behaviors and the logic behind behaviors apparently devoid of explanations.
Any human activity is based on a minimum of internal incentive role of boosting the environment and orientation.
We define motivation as all necessary internal states of the body that stimulates and guides behavior in order to satisfy them. In the category "states the need " we can include motivational forms, such as necessity, reasons, interests, beliefs, ideals, namely a set of factors that enable, guide and regulate actions.
Motivation plays the role of "filter " through whom we receive and absorb external influences and internal motivation by becoming "leaky " from the psychological point of view only to those stimuli that are able to meet our needs.
While some needs are innate (the biological), included in our genetic dowry, others are acquired during our interaction with the physical and social-cultural environment(ex. need of comfort, information, browsing the Internet, the affirmation of self).
The study of motivation presents a special significance in view of obtaining success in the actions we take. The relationship of correspondence between a certain amount of intensity and motivation for a certain level of difficulty of the task, is called the optimum motivtional.
To be optimally motivated means to be mobilized so as to achieve maximum efficiency in business.
Achieving a optimum motivational state depends on a number of factors: how we perceive the difficulty and complexity of tasks, how we evaluate opportunities (underestimation, correct estimation and overestimation), the type of nervous system (strong or weak), personality factors (type of temperament, character traits).