Trying to Get a Handle on Monthly Bills Without Going Crazy

I’ve been tightening up my budget lately because honestly, those monthly bills keep creeping up no matter how careful I am. Utilities, internet, groceries—it all adds up faster than I expect, and by the time I pay rent, I’m left scrambling a bit for everything else. I try to keep track with a simple spreadsheet, but sometimes unexpected expenses pop up and throw me off. I’ve been thinking about setting up some sort of sinking fund for irregular bills and emergencies, but I’m not sure how much to put aside each month without feeling like I’m starving my daily budget. Plus, I’m curious if anyone has tips on side gigs that don’t feel like a second full-time job but actually bring in a decent little extra. How do you all balance staying frugal without stressing out over every penny? Any tools or routines that help you keep calm and steady? Also, what’s your experience with small side incomes that actually make a difference?