Not sure what's the best way to celebrate it other than altering the personal text field on my profile.
It looks like I am still time traveling as we speak so mistakes are possible, but I couldn't reach 2010 and speak to my old self with instructions to mine (or buy) Bitcoin

Thanks for correction.
I think we need to think the other way around. Instead of regretting not being able to send a message to our young self from ten years ago, we should consider what our old self would want to share with us ten years into the future. We might hear our messages from the future if we concentrate enough. Are you guys hearing anything?