Does a vow mean that God has written and willed it for me, and is everything predetermined at all times?

Texts from the Quran and Sunnah indicate that everything a person does is written and predetermined, as in the Prophet's (P.B.U.H) saying: "Indeed, the creation of each of you is brought together in the womb of his mother for forty days as a drop of semen, then he becomes a clinging clot for a similar period, then he becomes a lump of flesh for a similar period, then an angel is sent to him to blow the soul into him, and he is commanded with four words: to write down his provision, his lifespan, his deeds, and whether he will be wretched or happy." Allah Almighty said: "Indeed, all things We created with a [decreed] measure." And belief in divine decree, both its good and its bad, is a pillar of faith. Allah wrote the destinies of creations fifty thousand years before He created the heavens and the earth. Allah's will is divided into two types: universal (kawni) and legislative (shar'i). Whatever is permissible and done by the servant, Allah willed it universally and legislatively. But whatever is not permissible, Allah willed it universally, but not legislatively.