I recently came across this website by Brett N. Steenbarger which has a whole treasure throve of resources for traders, including articles, resource links...etc. I've also placed the link on the sidebar under Trading Resources so we can always find it when we need it.
There's also a very interesting Three Dimensions (3D) Trader Personality Quiz by Brett, which will help shed some light on your own trading psychology.
Check it out and enjoy!