Darkish Aura?, What's it mean and how to fix it... Options

So someone I know who happens to be able to see aura's offhandedly told me of the gray darkish color surrounding my person. Upon further investigation of what a darker colored aura denotes, I wasn't very satisfied with the descriptions. There are positive and negative descriptions of the color as well as different ideas concerning what it's meant to indicate in the first place. Perhaps someone can explain the idea behind an "aura" and its color and what it might mean to possess a grayish one?

Something that I read that did cause some minor thought within me though I admit wasn't surprising was a description of blocked energies associated with the said aura color. I wondered if perhaps this could be an explanation towards my failed attempts at things like meditation, astral projection, etc. I used to think persistent was the key to my dilemma however that's come to another unfortunate close. If I can safely determine that my failures were even in part due to blocked energies and everything associated with such a status, how might I overcome this obstacle and finally be able to move on and away from this prolonged rut I've managed to remain in.

I feel what happens in these circles, and it also happens in a lot of other intellectual circles is that in our search for meaning, we allow others and set paradigms to define and tell us what to do. It provides us with the shelter of a community, a home, a sanctuary, but it also strips us of our individuality as the subjects of the Aether. Do you feel happy inside? Are you satisfied with the way you are? And if so, then why does an Aura matter?

Does it in the end truly matter or come to a form of importance of what other sentients perceive you, if you within yourself are satisfied with yourself, and by proxy everything you do and feel?