Exams.

My exams are coming near and the workload is so high that I am cracking under the pressure. But I am never going to give up.

Don't give up, but there is also nothing wrong with making sure you have back up, supportive family and friends and sympathetic mental health professionals.
Try not to obsess over the final grade. Progress, not perfection.
Be kind to yourself through your exam period. Let us know how you are doing.

I have created a routine to follow throughout my study period for the exams. It covers 8 hours of study a day. And should or should I not deactivate my Facebook account? For the time being,it remains deactivated. I am afraid of being a laughing stock.

Facebook is your call. Is it an unhelpful distraction or would it serve as a good reward during a study break? Remember that you control what and how much you post on Facebook or any social media. That said you aren't a laughing stock. You obviously take your exams very seriously.
Make some time in your study routine for fun and relaxation too. Two hours to go see a silly movie can invigorate you and help power you through.

Good luck with the upcoming exams. I wish you all the best with them!

Naturally, I am not going to finish off everything in time. I am only going to make an attempt to do so.