Yes--you have to include all the income. If you have a spreadsheet program on your computer, it can be really handy for tracking your income and adding it up for you using the auto-sum feature.
You might be able to offset some of the profit with business deductions--help for that here:
US Sellers: Help for Filing Income Taxes for Your Small Business
http://www.etsy.com/teams/7722/business-topics/discuss/6773969If you haven't looked into sales tax & business registration yet, you might want to take a look at this thread too:
US: Sales Tax & Business Registration--Links to Official Government Websites
http://www.etsy.com/teams/7722/business-topics/discuss/9799713