FIRED...Now what and will i ever find another job?

I was fired from a facility, which I basically think is bunch of BS . The DON said i had 2 complaints that my attitude was rude and rough. Thats not me. Not only that, ppk were around. There was no investigation. I was there for 3 mos. I had no infractions, or complaints. I think the whole thing was bogus! No write ups. I had another job prior that o held for 8 mos and they loved me, but the position was part time. I left them under good terms. Now im stuck doing sitter cases until something better comes along. I hv 4 kids that i support by myself. I hv a bachelors degree, and decided to go into nursing. I feel like my effort and sacrifices r bn wasted, and fear I am going to b stuck at a deas end job forever. Im wondering will i ever find another job? Mind u this lasy job had someone,an employee,which was n the community paper for drug abuse. Her picture and everything! A nurse told the DON! she kept calling off, even through the holidays. They kept her! I guess hvn someone who's addicted to drugs is safer to hv around than a nurse with a couple of unfounded complaints. WTH? Some insight on this pls...and mind u all that i hv received awards and recognition for my customer service every since i've bn n health care.