May I ask; how have other anniversaries been, did you do anything special for her? Have you stopped to think that maybe she was waiting for you to do something special? Most women expect the husband to think of something romantic, especially for the important anniversaries.

Do you do or get something special for her on her birthdays? Maybe you've set a pattern for yourself.

I agree that you need to talk to her about this.

PS What are you doing to alleviate your depression and to change your way of thinking?