Blow your nose gently
Use a saline nasal spray
Rinse with a saline neti pot or nasal rinse
Inhale steam from a hot shower
Use a humidifier
Drink plenty of fluids
Sleep with your head elevated
Apply a warm compress over your nose and sinuses
Try an over-the-counter decongestant if safe for you
Try an over-the-counter antihistamine if allergies are the cause
Avoid smoke, strong odors, and other irritants
Rest as much as possible