I just stopped one day after a decade of heavy beer drinking. Fortunately, I did not have any physical withdrawals that required medical attention. I knew had I kept going though that medical problems would be in the realm of possibility. I have an ample amount of sober time under my belt now. I think my best foundation now is occasionally thinking of the hangovers I put myself through. Never again!
Keep your 51 days, those are yours. I counted days during my first year and it was great to see that number get bigger and bigger. I was, and I still am, so proud of myself. I hope you can feel that too.
Yer awesome.