Sticky situation

So im a bit of a dilema. Having just returned for 3 months travel I feel as though I have pretty much got my depression under my control. I have a position waiting for me at my old work which is great cos it means I have an easy way to go back into earning immediately, however there is a problem. It was this job that started my depression again, and im pretty sure if I go back it will do again. What to do? If anyone has any advice im waiting with open ears.