הָאִשָּׁה אֲשֶׁר נָתַתָּה עִמָּדִי ג יב
Chazal5 criticize Adam for not having Hakaras HaTov, Dovid took his last 70 years, and specialized in Hakaras HaTov, with his Tehilim and loads of Hallel with Shevach and V'hoda'ah. He specialized in the weakness of Adam HaRishon. It appears like he was created to be M'saken (fix) what Adam HaRishon did. It would seem like Dovid was the true Adam, and the basic Yesod of every human is to thank Hashem (like the Ramban says6 that the shul is there for people to say: "בְּרִיּוֹתֶיךָ אֲנַחְנוּ We are Your creations").
If you don't thank, then you aren't really a human; rather like an animal! Actually, the Yehudi (which means Hoda'ah) took over the world, as Chazal say: אַתֶּם קְרוּיִן אָדָם, וְאֵין אוּמוֹת הָעוֹלָם קְרוּיִין אָדָם יבמות סא א we became the true Adam. When your very name means thank you Hoda'ah, then you always thank. This is why Yehuda was unanimously accepted as the Melech of all his brothers, and Dovid came from him.