This may be an area where Aikman can't relate to Romo. Aikman was the #1 pick in the draft. He used how he was perceived to motivate him. He used the public's perception of him as a source of confidence. IOW, perception was on his side from the beginning of his career. It was something he could turn to during his first season, no doubt.
For Romo, who went undrafted, the opposite was true. Unlike Aikman, he couldn't use the public's perception of him to help get him to where he is today. In fact, Romo couldn't afford to let perception get to him. He had to tune out public perception to make the climb. It was him against the world.