posted about 5 years ago
Hi ReluctantandNervous,
it seems that what happened to you after the first year is a " burn out". The PhD is a long distance run, not a sprint, so you need to find a rhythm of work that you can stick to it for a long time.
The burn out made you unable to work, which triggered guilt and insomnia, which made you even more inefficient and brought more guilt and insomnia. You might also suffer from depression. I would advice to arrange a meeting with support services in your university, and see if you can get support.
If I were you, I wouldn't quit, I would interrupt for a while, and try to pull myself together. On a practical level, I would try to structure my day better: wake up at the same time, sleep at the same time, eat well, aim to work for four hours a day, socialise, go to the gym. Live a normal life in short. If you feel too tired to do any work, take the day off.
Looking back at my PhD journey, I also had a burn out mid ways, as a result I suffered from insomnia for months. I was unable to fall asleep, I could not retain sleep and sleep was of bad quality. I was always waking up feeling battered. Of course I could not work efficiently. I did not realise what was happening to me. I wish I had taken some time off, gone to the GP and ask for some sleeping pills. It was a really bad period.
Thinking about the time you lost just makes it worse, as the stress is overwhelming. You can only aim to improve in the future. Set realistic small goals. Even small progress is better than none. Keep in mind that one of the challenges of the PhD is to stick to it and keep working on the same topic with a steady speed for years.
Good luck