This is maybe a weird request, but I'm looking for a way to send myself some information at a specific time in the future. Basically, it's because I've got a few sites that are huge distractions for me at the moment, and I can't stop checking my accounts, responding to messages, etc. My willpower is so low, and I've got a lot of important work right now and it's starting to really mess up my life.

So my plan is to change the passwords to my accounts to a long random string, then save that string somewhere that I can't access for X days. I imagined a simple way would be to use a site that would send me an email on a date, and the content of that email would be my random passwords. But my web searches only seem to find pages telling me how to schedule my own emails, which isn't what I need.

Any advice / suggestions?

(also, in case anyone is thinking it, the sites I'm trying to block access to are all linked to the same email account, and I'm also going to change its password, so I won't easily be able to reset them).

Edit: FutureMe is exactly the site I was thinking of, thanks lemmings!