TOLDOS - EISAV'S PREDISPOSITION
The age old question of the seeming destiny controlling Eisav's life from before his birth can be addressed by the Bal HaTurim making the clear comparison to a very different yet another אדמוני - David HaMelech. We see that all of Eisav's predisposition was shared by David HaMelech! And yet David excelled beyond even Shmuel HaNavi's expectations!
The words Hashem said to dismiss Shmuel's doubts and make distinction were אדמוני עם יפה עינים
This does not simply mean he had nice eyes. Rather as the bal HaTurim points out, the Sanhedrin are the עיני העדה.
He listened. As the Gemara says דוד הוא הקטן - he was as humble and receptive to his rabbeim after his rise to malchus as he was before his rise to malchus. He would look and ask for the עיני to guide him.
I would like to suggest another approach. Mori HaMashgiach had a keen and sharp insight into Yakov Avinu's concern in Vayechi that if he would give Mussar earlier in his lifetime, Reuven might leave and join Eisav. It cannot mean the coarse interpretation that Reuvain of the Shivtei Kah would be violent and idolatrous like Eisav. Rather, we find that on the surface - as understood in simple reading of the Parsha - Nothing seemed terribly wrong with Eisav. He was an outdoorsman who knew how to trap and used it to honor his father. Given his profession, he assumed he may die before his very settled father and there was no value to his inheritance. It is only with the deep penetrating, perceptive eyes of chazal, that we discover the horrors of who Eisav was. That deep invasive look is the true demand of the din v'cheshbon of the Ribonon shel Olam. יצרי מעללי איש are exposed in full glaring spotlight. A slight movement in Yakov's tent was deemed וישכב ראובן. Reuven could easily have felt accused and targeted, as upon the surface nothing was actually done wrong. Eisav's approach is much more comfortable. Leave me alone with the sharp invasive mussar of my innermost נטיות drives and intentions!
This invasive inspection needs DEPTH. Eisav was a man who was all about the externals. The acts of honor while trapping his father. The surface color of the stew as opposed to its substance. That lack of deep introspection is what set his future. He had no interest in toiling effort involved in cleaning out his own kishkas.
David Hamelech was יפה עינים - two eyes give percption of depth. The introspection of David Hamelech and his never ending sense of remorseful guilt and need for tefilah and atonement is saturated in almost every kapital Tehilim. David would self examine and focus with ultra magnification on his own character.
Those who lack the self introspection and honest willingness to see their own deep rooted drives, are in great danger of succumbing to the drives and middos lurking beneath our wonderful externals. The only other way to save oneself from utter demise is עיני העידי - Mussar seforim learned honestly for self examination and correction or a Rebbi with whom to consult and be open and vulnerable with.