I've started to use #habithunter (link IOSor link Android) to keep me on track in all the different facets of my life. Everything from saving money to doing crafts (contradictory, I know) is in here! My favorite part is that I've turned to to-do lists into my personal craft tracker. This should help me stay focused on which craft I should be working on next and ensure it all gets done on time.
If I'm understanding correctly, it doesn't sound like you can make any changes with your big items (rent, car loan), but if you really want to get frugal in other categories, I'd be happy to offer random tips. I use a finance planner that I made in Google Sheets to track my income/expenses, which has made it much easier to see exactly where my money is going with little effort. It's made analyzing my finances much more fun (I'm weird).
Not that you need to jump into it right away or stress about it, but I would definitely look into low-risk investing, and taking advantage of any 401(k) matching if your job offers it. If all of your savings is sitting in a savings account at, say, Wells Fargo, you're losing money to inflation. I wish I'd gotten serious about it in my 20s instead of my 30s! This book is a good place to start if you can get it from the library.
I have a small digital coin counting piggy bank that I bought a few years ago and put all my coins in there lol. A jar like this one works as well.