Keep from relapsing drug use?!

I used to inhale chemicals from a can whenever I was depressed or upset over something and I've been clean for over a year now, but I recently had a cold and used a nasal inhaler decongestant thing, and I felt myself begin to crave it when I was stressed so i threw it out immediatly after realizing I had began craving it. Does that mean I have a good control over this?