Dear future child(ren) of mine,
Today I am taking actions in order to promote a more healthier world for you. I will continue to ensure that the world I leave will be a better world than the one I was brought into. I will continue changing my lifestyle and choices, promoting a better, greener world while doing so. I aim to become the best role-model for you, and for the rest of society. I sincerely hope my actions can make a notable difference into the world that I bring you into. Continue on and keep promoting sustainability in our interactions with the natural world.
I love you.
Your future father