There's a mixed feeling here between doing nothing for anniversaries and taking care of ourselves. And then there's the belief of doing something simple, like sending a card with a very simple statement such as "Still worth remembering" hand written inside.
The best thing to consider is this:
Is it something that would help / hurt / or have no effect?
In other words, do not acknowledge the anniversary in any way simply as an outreach to your spouse hoping the gesture will bring your spouse back into your arms or see you in a positive light.
If your W is moving towards R, and that mean not just words or being nice, but indicating that they wish to work on the M (without prompting from you), then the card approach may work...
