What a great thread. The 'fight' not to drink was for me a doomed mission.
It was only when I realised that this was not a fight with myself over whether to go out every evening to buy my alcohol, not a battle I needed to have every night about whether I should drink or not. This is a choice to become sober, to choose health, mental clarity, self-esteem, and energy, not to mention better skin, hair eyes, over what drinking several bottles leaves you with.
Your key worker is right. Fighting is exhausting, but embracing change is not.
It is just a metaphorical page being turned over, once read there is no need to dwell on it, just on to the next chapter.