this is a v stressful period for you. if i was in your position, i would definitely feel like quitting too.

it is definitely not you. You are already trying your best. But eventually there is a limit to how much a person can do. They cannot just pile work on people and expect them to devote every waking moment to their work. You are doing your best, but of course have limits to how much you can do in a day before you keel over from exhaustion. You should not blame yourself for this.  Anyone with eyes can tell that you are being overworked to your limit and beyond. as long as you do not say anything, they will just keep loading and loading. thats how it is. Is it the system? probably.

I understand the necessity for the system because it is a product of the environment and its demands. So who suffers? The people in it. Yet at the same time theres nothing that can be done about it. I am one of those who used to blame the system, but now realised theres no point. No one man can change things, because it is inter-linked with society and how it functions. in the end, its always up to the individual to decide how much they want to give. If they are perceived as to not giving enough, they get blamed, if they give too much and other aspects of their life (health, family etc) suffer, the people int he system will jsut say its poor life management or whats that new buzz word thats going round nowadays "Work Life Harmony" = Poor Work Life Harmony, and just brush it off.

as far as im concerned, the whole situation you are in now, you are not to be blamed. if anyone does blame you within my earshot, i will defend your position at all cost