Well, i would say your story forced me to write a reply.
your life story is similar to mine. i am an introvert, still can't find any job after completion of my engineering in 2014, have monetary issues as i belong to a middle class family, above average student (more than 80% marks throughout my academic career, have reading habit and can study 10 to 12 hours daily.
I was also in the same dilemma few days ago as you are in now. Quite honestly, i would say i wasted 6 months to find a suitable job. in those 6 months, i relied on part time jobs, tutoring students, while hunting for a suitable job. But i am unable to find "any job" (word "suitable job" is deliberately not used here) till now.
So, i decided to prepare for CE-2016 few days ago. As, it seems impossible to find "any job" in near future and i can't afford more wastage of my time in search of job.
Therefore, my humble request to you is: (as i am gonna do the same)
Don't waste your time in sitting idle while searching for a suitable "suitable job". instead, your strategy should be "preparation of CSS + Search of suitable job".
Start your preparation for CE-2016 keeping in mind that it is your first and last attempt.
Don't rely on part time job as it will not give you a bright future.
Do apply for jobs in Govt and multinational sector in mean time during CSS preparation but your focus should be on CSS.
May ALLAH Grant you success.
Regards.

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"The secret of life, though, is to fall seven times and to get up eight times" Paulo Coelho, Alchemist