Welcome! Yes, today is the only day that matters.
I view my sobriety as putting together a lot of "todays".
Recovery is hard work and you can't do it alone. Keep reading and learn about the ways that different people have recovered. I use a combination of SR + AA + helping other alcoholics. You will find what works for you, but the key is to just don't drink today.
Tomorrow will then take care of itself.
Glad you are here.