Maybe the pressure of the tournament you were preparing for got to you.Now you are playing better because you aren't under that pressure.
Does the mind need rest?

Yes the mind definitely needs rest. There is only so much chess one can handle. In fact, I believe in not studying intensively right before a tournament.
Yes the mind definitely needs rest. There is only so much chess one can handle. In fact, I believe in not studying intensively right before a tournament.
Thanks for the input. I will definitely keep that in mind for the next tournament I have. What kind of things do you suggest I do in the days preceding a big event rather than intensive study?

No suggestions; I don't know of any one thing that has a positive effect on one's performance in a tournament.

Resting the mind is incredibly important.
Try regular meditation, and giving yourself mini-breaks each day to prevent burn-out.

Law & Order: SVU - watch the episode called "Hothouse". It's a pretty neat episode about your question.

Just about a month ago, I had been doing a lot of study (tactics training, opening theory, endgames, etc.) in preparation for a big tournament. Every day I would work for at least 2 hours. I found that even after a couple weeks of this, I wasn't feeling in great form and I scored a poor 2/5 at the tournament I was preparing for. Thrown into chess depression, I took a week or two off (aside from 1 blitz tournament) from playing and studying. Now that I'm just coming back, however, I feel as if I am playing better than I did when I was studying intensively. Is this plausible? Is there any merit to the idea that my mind needed rest? I just don't understand.
A good night's sleep is better than any overnight cramming. There is a good possibility you can forget what you crammed the night before, but with a clear head, you may be able to solve problems in a correct manner.
I'd rather take the time looking ahead to try and solve over the board than looking back trying to remember a line or move order I forgot.

Just about a month ago, I had been doing a lot of study (tactics training, opening theory, endgames, etc.) in preparation for a big tournament. Every day I would work for at least 2 hours. I found that even after a couple weeks of this, I wasn't feeling in great form and I scored a poor 2/5 at the tournament I was preparing for. Thrown into chess depression, I took a week or two off (aside from 1 blitz tournament) from playing and studying. Now that I'm just coming back, however, I feel as if I am playing better than I did when I was studying intensively. Is this plausible? Is there any merit to the idea that my mind needed rest? I just don't understand.
Preparing for a chess tournament involves the hard work being done weeks/months in advance. At least for me, when it gets to about 2 weeks away, its tactics, and just some regular pplay to stay sharp.
Obviously everyone is different, but in my case i "study" maybe an hour a day.
Just about a month ago, I had been doing a lot of study (tactics training, opening theory, endgames, etc.) in preparation for a big tournament. Every day I would work for at least 2 hours. I found that even after a couple weeks of this, I wasn't feeling in great form and I scored a poor 2/5 at the tournament I was preparing for. Thrown into chess depression, I took a week or two off (aside from 1 blitz tournament) from playing and studying. Now that I'm just coming back, however, I feel as if I am playing better than I did when I was studying intensively. Is this plausible? Is there any merit to the idea that my mind needed rest? I just don't understand.