Life is a combination of time and energy. This combination finds expression first through desires, then by action, and then by knowledge gained. Desire spurs us on to action, which makes us experience the result of the action; and that experience teaches us something, which restructures our desires. This spiral activity evolves all the living beings.
All living beings are activated by desires arising from within because of the instincts. They engage themselves in various actions for fulfilling their desires. These actions reward them with various kinds of experiences. Sometimes, their desires are fulfilled through sensory perceptions. Sometimes, they fail in their attempts and experience anger, frustration, depression and so on.
Though these physical or mental experiences end, they leave a subtle trace of the experiences, called vAsanas. For e.g. we drink a cup of delicious bAdAmghIr. The sweet experience enjoyed through the tongue may be over but the taste lingers in mind as a vAsana. On the next favorable occasion, the memory of bAdAmghIr surfaces and stimulates a desire to drink it again. The vAsanas of both pleasant and unpleasant experiences stimulate in due course likes, or dislikes, and these lead to actions for or against the relevant things.
The experiences of life educate us most effectively. The knowledge gained by our own experiences is referred to, as the firsthand knowledge because it is internalized by us and becomes part of our mental energy.
Desires are the expression of ichchA sakti (power of aspiration) and actions caused by them are the expression of kriyA sakti (power of activity). The knowledge we gain through experiences are the expression of gnAna sakti (power of wisdom).
Good desires cause good actions, which in turn elevate our knowledge. From this higher state of knowledge, better desires arise in our mind and they lead us to better actions, which in turn further improve our knowledge. Thus, we become wiser and wiser. This spiral action evolves the living beings to noble and enlightened spiritual states in the long run.
On the other hand, if we allow bad desires to activate us, they would lead us to nefarious activities, which in turn would lower of level of wisdom and develop baser instincts. We would become involved in unworthy deeds and become criminals.
If we are intelligent enough, it is possible to learn good lessons from bad experiences also. But this is like swimming against the current. It happens very rarely. Sometimes, a true friend, or teacher may interfere and lift us up from the effects of bad experiences. We cannot however, count on these chances.
We should always cultivate good thoughts and noble desires and work for uplifting experiences. The essential components of life are time and energy. It is always moving forward. Moving further, we continue to learn simultaneously through experiences. We should always ensure that our desires, efforts and lessons are all harmoniously moving in the right direction. Thus, we may ward off all the negative influences of the world and achieve progress in physical, mental, intellectual and spiritual layers of life.