Analysis of Let it begin

It's running through my veins,
in slow motion, no morphine
But I'm feeling endorphins
I'm swimming, in the ocean,
with orcas, and dolphins

I'm ready to give up,
which means,
I'm ready to give in

My sins wash over,
a good life, I'm sober
From the drugs of emotions

I miss you,
what that means is
I miss you in parts

The part that I love you;
then I skip right over
The part where you broke my heart

This movie ends too fast;
This car isn't real
This music is on blast;
I don't know how I feel

I'm time travelling
I need to let it begin
And let it end as it ended
And stop the pretending

Just let it begin—
It doesn't feel like I'm healing,
but I let go of those feelings

Just let it begin—