Stuck with an old account in Google Drive? Google Drive keeps on telling you that you should log-in with a different account from the one you’d like to log-in with — perhaps with an old work email address you no longer have access to?
If you’re on a Mac, this should be pretty simple to solve :)
Exit the Drive app.
Open a Finder window.
Press Command + Shift + G: a panel will ask you to enter a directory location.
Type: ~/Library/Application Support/Google
Delete the Drive folder.
Re-install the Drive app.
Open it. Log-in. Done.