Your life without alcohol will look surprisingly a lot like it does now - usually minus things like guilt, shame, lying, and covering up. You won't be spending money on alcohol. Your relationships will likely improve. You may lose some people in your life, but they are usually the ones who are toxic relationships to start with.
You certainly won't have hangovers any more, and your health will likely improve. You will have more time and freedom to do things that you enjoy.
It's normal to feel scared of the unknown. As an alcoholic, the bottle has become a trusted friend. But sometimes, you have to leave friends behind if they make you sick, physically, spiritually, or mentally.
As the others have said, Don't focus on your entire life without booze. Try today on for size. And tomorrow. Then the next day. You'll soon find that you can look to the future with clearer eyes.
For now, focus on getting through today. Let the future fall into place when the time comes.