Think about where you usually see dracanea growing successfully? Office building hallways, doctors offices.
Not much light at all.
So you need to take it away from any direct or bright source of light to indirect lighting.
It needs to be dry, do not spray the leaves except to clean every once and awhile.
Check to make sure it doesn't have pests. A dry household can attact house plant pests such as scale, spider mites etc. They'll be evident on the back of the leaves.
Is the plant in a pot that will drain, and excess moisture will be kept away from it's root. That is imperative with this plant.
Try a moisture meter to check for dampness in your plant. If all else fails, it may not have been you at all, it could have been over or underwatered at the store. If you purchased it from a big box store, you can usually take it back.

GGG

All the leaves on my plant turned brown and fell off. I am left with a 3 foot stalk. There is a new stalk growing at the bottom but that does not seem to be doing as well either.

Why is it not a good thing to mist the leaves on a corn plant?

I would water it well once a week.