Well, we can't just keep bashing Missingno for not thinking ahead.
Missingno-- Maybe you and a friend could share an account to re-discover things. I'd help you out man, and I'm sure any factions you are in would help you out too.
I'd say your best bet would be to take a break, and soon you'll find yourself not caring that you have to start over.
Looking at the bright side, you're probably not going to ever make that mistake again, right?