Working part time, your schedule is your first real budget. Spend your hours on purpose.

Hours behave the way money does. You get a fixed number, every yes spends some, and if you do not decide where they go, someone else decides for you. A shift here, a favour there, and a week disappears without you choosing any of it. Noticing that is where control starts.

Write out the next seven days and mark the hours already claimed by school, work and sleep. Whatever is left is what you actually have. Give two of those hours to something you would be glad you did.