He knows he embarked on a different journey than the other people on Earth in his quest for strength
He strives for perfection. And he knows it made him a little late in achieving breakthrough than other people. But once he breaks through, his powers multiplied a hundredfold than if he follows the normal path.
If it's not strong, why would it be so hard right?
Azief also recognize that he is very lucky.
Some of the breakthrough that he had, he probably had to spend many more years than he expected if not for all the fortuitous encounter that he had over the years
Even in that formation of Disk it should have taken him longer.
And even now when he is forming law Bodies, it should have taken him even longer, maybe around thirteen to fourteen years but because he was included in the Demon Monkey scheme, he got some help.
The Temple and the energy of the world was used to help him achieve faster completion of his Law Bodies