If your friend is already in your contact list you can look for her or him in the search field above your recent chats.
Type in your friend’s name or username (which might be an email address).
After you’ve finished racking your brains for that jumble of letters and numbers that just won’t come to you, click here.
Follow the on-screen prompts to create a new password.
You can always add people to your “Favorites” group, too, for easy access to a set group of contacts.