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