This is a great snippet for WordPress, usually used in a sidebar for featured content. If you were looking at a post of some type of content, you could stop that same post from being listed in the sidebar as well by using this code.
$this_post = $post->ID; $args = array( 'post_type' => 'career', 'post__not_in' => array($this_post), 'posts_per_page' => 3 ); $loop = new WP_Query( $args ); while ( $loop->have_posts() ) : $loop->the_post(); the_title(); echo '<div class="entry-content">'; the_excerpt(); echo '</div>'; endwhile;