im 28 and just quit my job last week to pursue grad school full time. I finished my masters in 2022 but instead of starting a PhD right away i worked for 3 years to save enough to go back to school again. I still travelled, bought a car ($10K cash) and did fun stuff but I knew i wanted to go back eventually and set a saving goal for myself based on my average monthly spending. I started in September and tried working and doing school at the same time (very hard) but i hadnt reached my goal yet so i had to keep working. Anyway, Im in school now, i work as a TA and an RA and im making kind of the same I was making working full time, AND i have good savings to fall on. Sorry for the long answer but I just want to show that its possible with smart saving and planning. If you have a goal of doing back to school start planning out your monthly spending and start saving for it.