First to point (if anybody doubts
) that indeed he was The Choosen One; it is crealy seen in S.3. Ep.
15,
16 and
17, when Ani, Obi and Ahsoka found a
Force Planet.
From Star Wars Wiki:
A planet hidden in the glow of light emanating from inside it, located somewhere "in the heart of the galaxy," was the homeworld to the midi-chlorians.
...
The Ones were a family of exceptionally powerful Force wielders who lived on the planet Mortis during the Clone Wars. Led by the Father, the Son and Daughter were embodiments of the dark and light sides of the Force, respectively. The Son and the Daughter were worshiped as the Twin Deities or simply as the spirits in the
Nightsisters' religion.
There he defeated The Son AND The Daughter and was basically said by The Father that he IS the choosen one and should stay on the planet to balance the Force in the Universe. Those episodes show his strong connection with the force.
Morals of the episodes are:
"
Balance is found in the one who faces his guilt." - ep.15
"
He who surrenders hope, surrenders life." - ep.16
"He who seeks to control fate shall never find peace." - ep.17
So, by some theories, Anakin overpowering The Son and The Daughter represents the choice he can make to either follow his destiny (The Daughter) Or forge his own path (the Son).
And in the end, Anakin´s attempt to control the destiny/fate and surrender himself to fear of loss, did led him to the Dark Side and his nightmares to come true.
Anakin fall was seen even there in ep.17., but I won´t spoil the episodes further in case someone wish to watch it.
These 3 episodes are story within the Clone Wars saga, so you can wach them even if you didn´t watch the whole CW series from the beginning....
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Here was discuss wether Qui should have been his teacher, but I would say: Mace Windu.
Mace was a powerfull Jedi Master and master in fight style called
Vaapad.
In the later days of the Galactic Republic, a new variation of Form VII [fight style], dubbed Vaapad after a creature native to the planet Sarapin, was created by Jedi Masters Mace Windu and Sora Bulq. Vaapad was explained as being a state of mind rather than just a fighting style, allowing the wielder to channel his own inner darkness into the duel, and accept the fury of the opponent.
With Anakin constant fear and flirting with the Dark Side, I think that powerfull Jedi like Mace would train him better and Anakin would learn to be more in control with his emotions and come face-to-face with his fears and doubths, therefore more in control of his Dark Side.
And, in theory, he would never draw his sword against his Master, like when Mace was fighting Palpatine (but then again, we wouldn´t then have this story to play with
)
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Also, he built a strong relationship with Ahsoka, his padawan.
The Jedi order wrongly banished her from the order (S.5), and then wanted her back after Anakin exposed the real villan, but Ahsoka refused to come back because she was deaply dissapointed with The Order.
For Anakin, that was a hudge lost and also one more step towards distrust in The Order and The Fall....
.....