Step 1 - Realize it was no one's fault. Although maybe it was eBay's. Or yours. Okay fine, it was mutual.

Step 2 - Try to remember your username. Allow 52 weeks.

Step 3 - Try to learn HTML. Allow 52 weeks.

Step 4 - Alternate between Step 2 and Step 3. You can also add up both time periods if you so choose. Or even if you don't you can just let the time slip away.

Step 5 - When all else fails, follow all the handy dandy eBay tips for remembering your info.