If you find something depressing then this causes you to feel a sadness or unhappiness. Everyone experiences depressing circumstances in life, and depression can range from mild to extremely severe and debilitating. When you lose a pet, when a close relative passes away, or even the loss of a job or a good friend moving away can be depressing for those who go through it.
Let me tell you how real depression is: There are people alive only because their children are.
If I told you my story you'd be stuck wondering how I smile everyday.
Don't be afraid to start over. It's a new chance to rebuild what you want.