In the natural world, with exception to humans all living and nonliving ones do what they know. The human ego helps us in thinking but useless knowledge prevents us to practice it. We notice animals and birds follow natural laws and principles.
For us the confidence seems as the most potent thing. Our confidence cannot help us to avoid corruption and thus thought pollution that harms the natural world in which we live.
The faith made Lord Jesus give his life on the cross, Socrates drank poison, all martyrs and soldiers, and others to sacrifice their greed for sake of duty. By faith one can sacrifice selfishness not by confidence as it seems.
Thus, it seems that the confidence is the Force that Ego seem to use, but Faith is the Power that we have at the Pineal Gland and thus the rest of the body. If we are doing technological works on brain control, we can easily understand that nature gives faith as power that runs body from womb to tomb…
On the other hand, the ego simply seem interfere with natural laws and principles and thus we have egoistic and egocentric people becoming rulers and dictators. The misuse of ego is considered a mental disease in Ayurveda and other Spiritual or Holistic Health Sciences as it disturbs not only the individual but rest of the natural world.
All of it usually leading to weakening of pineal gland that needs faith in the natural laws and the principles because it works naturally as we say from womb to tomb…