It takes a recessive gene. ๐ But seriously, there is a great lecture by Richard Lawson entitled <em>Mastering Your Career</em> on iactingstudios.com that I've recommended a bunch of times in which he lays out the elements of a successful career as being a synergy between Politics, Personality, and Craft. His mentor, Milton Katselas, said it was Acting, Attitude, and Administration in <em>Acting Class: Take a Seat</em>. Either way, the one in the middle can feed or detract from the others because attitude does indeed monitor talent.
Some traits the actors I have known who have enjoyed decades of sustained success have in common are that they tend to be positive thinking, glass-half-full types with tireless work ethics who see opportunity - not obstacles - and go for it having faith that even if they don't get exactly what they're after, something else positive will come from it. Not that they're necessarily high-extroversion members of the Up with People People who never get down. As the cliche goes, they just always find a way to get back up and are are not prone to negative, fear-based thinking and downward spirals. They aren't rejected. They just weren't selected. That's how they've survived all the ups and downs of this capricious business for as long as they have.
Honestly, I don't know how helpful that is in itself because I feel it mainly comes down to one's base personality which I tend to believe is formed and mostly set for life when we're pretty young. Like younger than most people even get into acting. But there's always the literature of the whole Human Potential Movement with all it's positive thinking techniques, energy work, visualization, manifesting, and whatnot depending on how much woo woo you can handle. So if you're a glass-half-empty type, maybe give some that a try. Who knows? You might find something life-changing.