futures market

Of course, one way to keep track of your changes in one's psychological or other states is to be keeping some kind of ongoing record for later review. I know people who keep "mood diaries" from day to day so they can track exactly how deeply into the pit of despair they've gone compared to earlier, happier times. Alternatively, there are websites like this one that one can use to send e-mails to themselves in the future, reminding them exactly how things used to be and all the things they resolved to do by the time the e-mail was delivered.