Customize “My Account” Tabs

add_filter ( 'woocommerce_account_menu_items', 'misha_custom_my_account_menu_items' );
function misha_custom_my_account_menu_items( $items ) {
    $items = array(
        'dashboard'       => __( 'Dashboard', 'woocommerce' ),
        'orders'          => __( 'Orders', 'woocommerce' ),
        // add more items or remove by unset()
    );
    return $items;
}