Mindless addiction/aversion are dead programming, and if the idea is to be able to become whatever is necessary at a moment’s notice, they’re liabilities.  But how to start?  I’ve seen plenty of well-intentioned-but-doomed-to-fail aspirants immediately declare they are free of addiction/aversion, but that kind of cold-turkey radical leap is too severe to sustain.  What I find achievable is training myself to foster healthy/sustainable addictions and aversions, then wean myself of those.  Addiction to anything is bad, but some addictions (good diet/exercise/discipline) are more productive than others.  

Start from there, then steadily hone yourself.