Check out some of these links to learn more about performance and stress:
New studies of human brains show stress may shrink neurons (Original Article written by Sapolsky, R.M. et al, 2000 in Endocrine Reviews)
Performing your best when it counts the most! - Kyle Kepler
"Time management - Do essential tasks and prioritize the others. Consider those who may be affected by your decisions, such as family and friends. Use a check list so you will receive satisfaction as you check off each job as it is done."