Hey Jake -
The first weekend is always the hardest, but you'll find that once it's behind you, you'll feel really good about getting through it. I like Natom's suggestion of coming here and reading - that's what I did and it really helped keep me motivated.
Remember, they're just days like any other - it's all in our head, which is where we fight the battle. I don't know what you like to do, but I like working with my hands so I keep myself busy that way. You could also help your mom (!), wash the car, whatever...... it does get easier the longer you stay clean/sober.