Birds in the Heart - Sailboat of the Heart

Why is it that our mood is so often unstable?
It is because, like a boat sailing in the ocean,
our mind goes up and down with the wind and the waves.
In this manner, the boat of our heart has been
tumbling forever in the sea of karma,
feeling no peace, full of troubles.
Actually, you do not have to suffer like this.
You can detach yourself from suffering,
by coming to grips with the realization that
the world around you is unreal.
We look at the ocean, day in and day out,
but we in no way are transformed into the ocean.
We look at the sky, day in and day out,
but we are not transformed into the sky.
I am still I. In reality, we come and go,
happily following the flow of our circumstances;
but we are not any of the circumstances.
Fundamentally, there is not the slightest real bondage.
So, why bother with all of this joy or sorrow
that depends on the ever-changing world of events and circumstances?