I had a daily Bliss

I had a daily Bliss
I half indifferent viewed
Till sudden I perceived it stir —
It grew as I pursued

Till when around a Height
It wasted from my sight
Increased beyond my utmost scope
I learned to estimate.

Emily Dickinson

In Simplified English

I had a daily Bliss
I enjoyed viewing half indifferent
Till I perceived it stir suddenly—
It grew as I pursued

Though it disappeared from my sight
Around a Height,
It grew increased beyond my utmost scope
I learned to estimate.

“it” is apparently the Sun, that Emily admires.