Arvind Narayanan has created a utility to create an friendfeed widget for your website. The widget does not include your friends on friendfeed but just your own personal feed, which is why it is best used for a personal lifestream.
The configuration has a couple of options, such as title, background color, width and height, and then simply inputting your username will create the embed code. You can preview the result and make adjustments if necessary.
The following is the widget that I created.