I am not religious, at all, but in times of needing to let someone/something go, I have John 11:44 calligraphed and framed on the wall to remind me...
I behold the Christ in you.
I free you from my anxiety, from my personal idea
of what constitutes happiness for you.
I trust the spirit of God to illumine you,
to guide you, to show you the way that is right
for you, the way that is for your highest good, the way
that means happiness and success for you.
I place you lovingly in the care and keeping
of the Father. I stand by in faith. I refrain from
imposing my will upon you. You are God's child;
you are here to fulfil your own special purpose.
As close as I am to you, as much as I love you,
I can not live your life for you. Your destiny,
your place, your fulfillment is between you and God.
I know that we are one in God and that as I
trust God in my life and trust Him in your life,
all will be well...
Bless you now, child of God.
I behold the Christ in you.
"UNBIND HIM, AND LET HIM GO."
John 11:44
Reading and repeating this passage to myself has gotten me through death, divorce, break-ups, and more recently things about my current boyfriend that drive me nuts. I look forward to passing it on to my son, as was passed to me by a parent-figure when approaching adulthood.