First step, convert both cats to dogs, and reap the benefits.
Okay, okay, I jest. Cats are fuzzy and wonderful. Aria, I think I've stumbled across your journal a few times. You had a terrible roommate situation, which lately resolved? I'd say your first step is to find a way to track your actual spending, instead of having a miscellaneous category that's currently labeled 'Amazon'. seems like you're already thinking down this path, and I highly encourage continuing. Getting everything down to the gnats rear was a huge help for me. You'll have to itemize grouped Amazon purchases, but that ain't no bad thing.
Do you formally track spending anywhere - Mint, YNAB, or on a personalized spreadsheet? If not, MDM's spreadsheet for a case study might be a great jumping off point to make your own sheet. I've found that I really enjoy the spreadsheet approach, because I can personalize the categories, instead of using whatever Mint, etc has pre-decided for me.