What can james do to improve his chances at quitting drugs?
a find a support network for accountability
b cut off communication with family
c continue to spend time in the same places
d hold off on strenuous physical activity

A) Find a support network for accountability.
Hope this helps!
~Mistermistyeyed.

The person who utilize the progression principle will keep adding the difficulty of the exercise that he's doing, while the person who does not, will only stay stagnant.  the person that utilize progression principle, will get a stronger endurance because now his body is conditioned to do harsher routines.{the answer was already on verified)