Like you, I write songs. I know how labor intense it can become and how, on a personal level, it can bring sensations of joy and of disappointment.
This song should bring you great joy. It is thorough; it is comprehensive and it demonstrates a keen understanding of melody and composition.
As for the title, I find it appropriate but a bit casual - maybe overused is the appropriate response. I read other suggestions and they are wonderful but let me just tell you what I was feeling while listening to your work.
I felt the energy of movement; the sensation of travel; to use the venacular, I felt carried away; transmitted and transformed by it.
The distancing was not a sad one but more like a new beginning. A shell cracking, a beak poking through, a cocoon falling away; a birthing; a coming forth. Any word or title that would fit this feeling would best describe your most accomplished effort. Some words to consider might be:
Nascency: Coming into existence; emerging
Nativic Travail: birth work
I felt metamorphic energy. I hope this helps.