i would say right out of high school. i got a taste of what i thought at the time was "independance" and somehow became a little nihilistic.
due to negative influences, i quickly became disillusioned and became a negative influence myself.
what i didn't realize at the time was that we can affect our own reality, depending upon the degree of belief we have, in what we hope to achieve.
the higher our degree of belief in 'something,' the higher the accuracy to perceive that 'something.'
we become inundated with society telling us who we are, what we can't do and what is possible (limitations).
imo, it is true when some say anything is possible... anything you have the ability to truly believe in and accurately envision, is possible.
carelessness is when we don't realize that when we imagine negativity, we make that become a real part of our life - think well, brehs.
Peace and Good Thoughts!