<i>be so good at this as to believe in your lies&#x2F;stories you&#x27;re telling</i><p>One of my favorite quips from the internet is:<p><pre><code>   All really good salesmen temporarily believe
   whatever bullshit they are selling at the time.
   It&#x27;s kind of like method acting.
</code></pre>
They&#x27;re not lying if they believe it themselves!