Anxiety Support Group
Anxiety is a physical condition marked by intense and persistent feelings of distress, fear, angst or dread. General anxiety caused by routine day-to-day stresses usually passes quickly and is experienced by almost everyone at one time or another. However, such feelings that linger over time and are very difficult to cope with, and which lack a clear cause, may indicate...

Try not to let work impair your ability to enjoy the birthday tomorrow. The memories are more important than work. Even if you have to work the extra hours in the evening or on Sunday, try to forget about it during the party if you can.
I hope you feel better soon. Best wishes.