I used to really enjoy my research, and I'm pretty sure it was the RESEARCH I enjoyed, not just the circumstances. Now, circumstances have changed for the worse so much that I don't want to be at work about half of the time. The other half is bearable. I don't think I should quit because things around me have changed, I haven't. Do I just hope that things change for the better again - can I MAKE them change for the better?

Hard to give constructive advice when your message is so cryptic! :o) Sorry you are going through a tough time but remember, most research students do at some stage. PhD research can be very tough and often rather lonely too. Hope things work out for you.

What particular thing is making it difficult? I'm sure you can find help from somebody.