<human>: Can you summarize the given text in a few sentences?

I graduated University about 6 years ago and was unemployed for about 6 months after. After the 6 months I was offered a 6 month job under some government "get people in work" scheme which I took. 

Anyway I did the job and worked my ass off and after the 6 months I was offered a full time contract. Now during that 6 months I realised I hated this job with a passion but with the economy and lack of jobs I stuck with it. I have now had this job for 5 years. Every single day is like hell for me. I hate the people I work with, I hate the repetitiveness of the job, I hate every second I am there and spend every night dreading work the next day and will usually stay up late as I just don't want to go to sleep and have to face waking up and doing it all again.

Now I know this isn't something new and that many people hate their jobs and put up with it but the problem is that I have literally nothing else in my life to distract me from it. When I started the job I was in the best shape of my life and had a great social life, now I am very overweight as the depression and stress leads me to comfort eat. Due to this weight gain I have zero self confidence and have stopped socialising completely as I don't feel comfortable letting people see me how I am. I bought an exercise machine but I am so tired and demoralised after work I just don't have the energy or will to use it. 

So basically my question is should I quit this job and spend a few months just concentrating on sorting the mess my life has become? The upside of having no social life is I've managed to save a fair bit of money so I would be able to support myself for a good few months but I am just left doubting myself every time I try and make a decision on this so would really appreciate a second opinion. Sorry about the length of the post.
<bot>: Have soul destroying job which has affected other areas of my life. Should I quit said job and spend a few months sorting my life out?