In the WordPress backend, on the admin bar, there has always been the “Howdy” text that greets you and leads to your account info. It can be customized.

PHP

Place the following code anywhere in your theme’s functions.php document.

				
					// change the "howdy" text in the admin bar
	function custom_howdy( $wp_admin_bar ) {
	  	$user_id = get_current_user_id();
	  	$current_user = wp_get_current_user();
	  	$profile_url = get_edit_profile_url( $user_id );
	  	if ( 0 != $user_id ) {
	    	/* add the "My Account" menu */
			$avatar = get_avatar( $user_id, 28 );
			$howdy = sprintf( __('Hello, %1$s'), $current_user->display_name );
			$class = empty( $avatar ) ? '' : 'with-avatar';
			$wp_admin_bar->add_menu(
				array(
					'id' => 'my-account',
					'parent' => 'top-secondary',
					'title' => $howdy . $avatar,
					'href' => $profile_url,
					'meta' => array(
						'class' => $class,
					),
				)
			);
	  	}
	}
	add_action( 'admin_bar_menu', 'custom_howdy', 11 );
				
			

Source: WEBNOO

The above changes the “Howdy” to “Hello” which feels more professional. But you can change the following line “Hello” (line 10 above) to be anything you want.

				
					$howdy = sprintf( __('Hello, %1$s'), $current_user->display_name );