Is it possible to recover from this un-soldering mistake?
Gently scrape a little of the soldermask (the green semitransparent paint) off the end of the track which leads to the pad you've lifted.
You should see bright shiny copper underneath where you've scraped. Make sure its reasonably clean, but don't be to hard on it or you'll destroy that too ...
Then push your wire through the hole with missing pad and bend it over to touch the clean copper at the end of the track.
Solder away ...