I shared these links in the comments section of an earlier post, but I find them so useful I think they deserve a post of their own. My earlier comments:
I would like to share these on-line meditative rooms from lime.com. If you find it hard to find the time to take a physical break, these rooms may provide a solution.
I was a bit pessimistic at first, and when I first used them and focused on the rooms and experience itself, I found them of little benefit. When I experienced them with my road map in mind, however, I found them conducive to clear, peaceful, and focussed thinking. So that is my only tip – to use them whilst thinking of something else, such as your goals or trading plans.
Also, the pictures are great.
The main page: http://www.lime.com/meditation_room
My favourite, the Zen Room: http://www.lime.com/files/meditation_room/buddist_loader.html