Don't look back as a negative thing. Look back and see that you've been through all that so far, and you've made it, and it can still get better. Some days will always be harder than others. I've suffered from depression for over 20 years - does it ever really go away? I'm not sure. But I'm still here, still fighting it, and you will overcome it.

The most important thing is you're STILL HERE. And that really does mean something.