One tip I heard when I first got a job is if you go shopping and pay with a debit card, don't be afraid to get $10-20 cash back just to throw in a rainy day fund. Granted the person that told me this used it to hide money from her husband but the point still stands.
Always keep emergency/rainy day money because you never know when you'll need it
At this point the if lid on a Little Caesars smushed against the cheese you couldn't tell the difference between the pizza and the box