I gave up soda a few years ago. I will drink it but it's probably like 10 times a year. It was hard for awhile but now I don't even think about it and I feel better. I think you'll be happy you did it.
I also take long breaks from alcohol but I find that's harder to give up completely. I'm going to try to give it up till a wedding I am going to at the end of October, so I'm with you.