I really loved the line :

'I have no memory of the way
Just nostalgia in my heart'

This poem really dives deep into this topic, and you vividly explore the possibility of reincarnation, which, in my opinion, is possible, yet I am not certain about it personally. It is very interesting to ruminate (also a word which's usage I loved in this poem) on this, as it does reveal to you a lot about life and does open up your eyes immensely, regardless of the truth about reincarnating. Well done, and thank you for sharing! :)