Why is andrea del sarto unhappy despite being a skilled painter? (Robert browning, Andrea del sarto)

Because he believed he hasn't attained the height he desired and he may never attain it.

Step-by-step explanation:

In the poem titled Andrea del Sarto, and written by Robert Browning. It was revealed that a certain painter named Andrea del Sarto was unhappy about himself despite being a good painter. And having the ability to create flawless paintings.

However, the main reason why he was unhappy about himself despite making a good living from the painting profession is that he believed he was supposed to attain the kind of artistic heights his contemporary has attained. That is creating artistic paintings that have soul, making them be at the pinnacle of their profession.

But since he believed he hasn't attained that level and he seems not to find the proper solution to attain the level. He was unhappy about himself.

jml angle lkj & angle mj = lm