For me the thing that helped the most was the /r/stopdrinking sub on reddit. Reading people's experiences and techniques from all sorts of groups and books, and reading about the triggers and follies of their relapses helped me a lot. Also a place where I could talk about problems related to the sobriety was nice.
If you live in a bigger city or another you may want to look for a craft soda shop. It can be helpful when you go to a friend's where they drink. You'll have your fancy soda so you don't feel left out when they get their fancy beers. Also my 3 go to drinks for bars and such to not feel left out or another are: a mock mojito, ginger beer with a splash of cranberry juice, or a roy rogers(coke with grenadine). In that order. A lot of places can't make a mojito, some places don't have ginger beer or they have super low quality ginger beer, but everywhere has grenadine(which is pomegranate syrup not cherry...) experimenting with mocktails and stuff at home may be a good thing for you depending on what your relationship with alcohol was like.
Also last year for my soberversary I wrote an article on my sobriety and experience in tech if you want to give it a read. A lot of my points above are expanded and there's some good discussion in the comments. https://dev.to/samuraiseoul/alcohol-and-developer-culture-19...
Lastly, if you want to talk or vent or have questions feel free to reach out to me either on here, or using the contacts in the article I linked to above.
I will not drink with you today, good luck and good job on the ten days!