I work better when i'm depressed

Yes it is normal to an extent. More so for stress than depression but it is a similar situation. Too much stress is bad but if no pressure to perform is present, productivity may be inhibited.

When I went through the worst time of my life I kept my mind on working harder so not to dwell on the major issue I was dealing with at the time. Took about a year but I got over it and went on with life.

I hope it's normal, I will spend a week on a design and then I get depressed and it just comes to me. Probably has something to do with Right and Left Hemispheres of the Brain.

Lots of creative people are depressed.

Me too