is my depression invalid?

Lately I've been having conflicted feelings that just keep getting worse. From the outside it may seem that I have a good life—better than most people could ever hope for..... though my mom is the main reason I am depressed.

I seem like I have no reason to be depressed in the way that I am, so I feel guilty for it! I'm mad and disappointed at myself for being sad and suicidal while so many other people are suffering.

I feel like my pain should be ignored because it is "invalid".