Over estimate the time needed for things instead of under estimating today, do not pressure yourself.
You need to be very careful with your time management today, especially your projections of how long certain things will take you. You tend to under estimate the time needed for things and you end up in a flap because of this. If you have to over estimate, do this, as it's better to finish early than late. Do not put pressure on yourself by agreeing to do things in unreasonable time constraints.