I'm so sick of working part-time

This is mostly a vent post. I'm doing my masters right now and I've been working alongside school for about 3 - 4 years now (on off with different places throughout the years) I'm just so sick of the low paying tiring jobs that leave me with little energy, I just wish to work in my own field but there are No jobs. I feel like I am going to be waitering/baristaing/bartending for the rest of my life!