Complex sentence: Members are encouraged to see inside them a sober self and an addict self which are fighting for dominance, the one is trying to be sober and well, the other is obsessed with the drug and wants to keep drinking or using.
Split into simpler sentences: Members are encouraged to see inside them a sober self and an addict self which are fighting for dominance. The one is trying to be sober and well, the other is obsessed with the drug and wants to keep drinking or using.