Burning out the coil can and will happen over time; however, we have a few tips to help extend the life span of the coil.
The first tip is never to fire the device without enough liquid inside the cartridge. Another tip would be to try to prevent the coil from overheating from excessive use by just allowing some time in between puffs. If you're excessively vaping back to back, the coil may tend to get rather hot, and you will risk burning out the coil.
You also want to make sure that you are not taking too long of a puff, as this can also easily overheat the coil, causing it to burn.
One last tip would be to make sure that the airflow control valve (which can be found just below the mouthpiece) is fully open so that you can allow the proper air to flow over the hot coil.
If this is closed when you go to fire the device, you will starve the coil of the much-needed cool air.