compelled to quit

It feels futile the efforts and dedication given to the things that matter the most when it comes to the outcome and it seems so bleak and significantly disappointing. you feel as though your priorities change. you no longer wish to do the job you were contractually obliged to do, but instead look inside to realise that your efforts all this time were disregarded, wasted. you realise that in order to gain something you must lose another. today i was faced with this decision, and the first thought cropped into my head was to quit this dead end job. quit the misery and the suffering. quit the anxiety and the depression. quit the longing to kill yoursellf everytime you hear that patient calling 'nurse' every few minutes. thinking more thoroughly i identified that indeed, i am not happy where i am in life. i am working at a role that is below my potential and indeed it may be a stepping stone, it feels as though i am not learning anything. i feel that the experience gained does not outweigh my desire to quit this job. and so, i am now faced with a harsh and real decision: shall i quit this job and concentrate on other things?
i feel tourmented between yes and no. i feel like a caged bird in this job, yet if i am to set myself free i fear for things to go south. i have already witnessed how not having a job affected someone dear to me, two people in fact. though i know that something like that will never happen to me. i am simply stronger and i have my initiative. i am however stuck. i cant choose whether to quit, just 2 months into the role, or stay and see if things do get better... i doubt they would get better. in fact, i know they won't get better. with that said i feel that the answer should be obvious. i should simply take a leap of faith, and quit.