You become vulnerable to relapse due to 3 reasons
1) Long lasting changes to brain function from repeated exposure
2) Genetic predisposition
3) Environmental contributors
What does this mean for you?

What starts off as dopamine firing in the DA circuits progresses to prefrontal cortex and the glutamate circuitry in the nucleus accumbens
This means from mere dopamine spikes you slowly transition into creating powerful memory based learning
All due to repetition.
Solution?

Genetic predisposition is out of your hands. Your environment can be salvaged to eliminate all triggers and reset to serve your purpose.
But all efforts are in vain if you don't abstain for 3 - 6 months
ONLY possible with the right systems to guide you
Everything else fails