Well this is quite a thread. Welcome!! I appreciate you sticking around @Bgs, that’s a lot to digest for your first post. I hope you were able to get some rest after you flushed the rest. I know for myself, having coke just meant let’s do this until it’s gone and get it the eff over with…the fun in that party was long long gone…it was just another night of torturing my body mind and soul.
I am glad you were honest with your partner. Honesty with myself was equally, no, more important. I know it is hard to get real with ourselves, we don’t realize that what sounds ‘not so bad’ to us, is horrifying to those without substance abuse issues. That is often an eye opening moment.
Advice? There is already a lot here. We all need to find our own way and what works for us, so I will add some…see what works for you and what doesn’t…
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Reading threads on here in the early days helped me a lot…reading old ones, new ones, just reading as much as I could.
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Reading sobriety memoirs and books was also very helpful for me.
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Reaching out or reading here if I was feeling cravings.
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Putting myself to bed early and often when needing to to avoid cravings.
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Physical activity every day, tiring out my body and mind. If I wasn’t an old lady, I think punching bags sounds perfect. Running works for me.
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Feeding my sweet tooth…replacing the sugar carbs in alcohol with other sugar carbs for awhile …so as to ease in instead of deprive my body of what it knew.
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Journaling…writing down how I feel, what I fear, what I hope for and want.
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Keeping a list on my phone of who I want to be, how I want to live my life…including the pros and cons of alcohol and drugs (see link below).
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Got honest about what drinking and using really offered me, not the ‘fantasy’ of what they brought to my life. I knew 100% what that life was like…but what about life sober??
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Keeping my focus on today, right now, this minute…in early sobriety this was so important for me…it is always important for me…but more so when I needed strength to get thru each day.
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Therapy as needed to delve into the why of my substance abuse…journaling and reading go hand in hand here.
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Educated myself in the various resources available for sobriety (see link below).
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Yin yoga, guided meditations and mindfulness all helped me soothe my anxious mind body and soul…much needed.
Those are some of the tools I added to my sober toolbox along the way in my sobriety. It is a journey and a process and not always a straight line. But knowing that failure was not an option also helped. When I fell down, I got back up…each and every time. Believe in yourself and honor your self by keeping going and working toward the healthy healing you.
This thread lists resources and books…
This thread includes my list and also great suggestions from other members…
This thread has LOTS to read…
Plenty to keep you busy there for awhile. 
You made a great choice choosing sobriety and honesty, a great step toward healing. Sorry for the book…I get passionate about sharing various resources and sobriety info. 
Keep working towards your goals and being your best self…it is hard, harder than you may know now, but it is also 100% worth it…YOU are 100% worth it.