It seems for me that they both get kind of jumbled into one. When my anxiety gets bad; I get depressed, and then get really negative and then I stop feeling as anxious when I cry a lot, but then I slip into a deep depression. So I know what you mean and it's hard to tell the difference sometimes, but neither here nor there, we suffer from both of the disorders (a/p & depression), and sometimes it's hard to get through the day. I would have to say is just wake up in the morning with a smile on your face and think positive.
I try to stay positive even in the worse of times, when my anxiety/panic is at it's worst, or when I'm extremely depressed. I know it's hard, but you'll pull through.
We're all here for you. :)
BTW- I'm always worried about my mother as well, because she still smokes and I wish she would quit for her health, and sometimes I worry that she may develop Alzheimers because her mom had it and then I panic for her health and yeah... well that's A/P for ya LOL
So then I calm down, clear my mind, and just meditate. (or try to)
"Be glad of life because it gives you the chance to love and to work and to play and to look up at the stars."