OS X Lion User's profile Library folder is missing

In OS X Lion, the user's profile Library folder is hidden. There are several ways to unhide it.  The easiest and safest way is by using the free Onyx utility application. Another method is via the command line or simply navigating to the directory.

Via the Terminal
Launch the terminal and enter the following command line.
sudo chflags nohidden ~/Library


With the Free Onyx utility (There are other utility programs that do the same thing).

1. Download the free Onyx utility program from http://www.titanium.free.fr/download.php

2. Click on the Parameters icon, sub-menu  -> Finder -> and check mark the option Show hidden files and folders

3. Now, the Library folder should be listed in the user's profile.

Go directly to the folder.

You could always go to the folder even if it is hidden.  From the Finder menu -> Go -> Go to Folder...

Enter the location as follows, replace _user_ with your own

/Users/_user_/Library