This quote could not be more true . . . or more painful.
I can think right now of three "drop to my knees how will I ever live through this it's so hard" decisions I've made in life. Surely these are not all, but these three come to mind vividly and remind me of how fragile our hearts can be. Thankfully time really does heal because in all cases, when I imagine not taking those steps then, I realize that the pain now would be so much deeper, more lasting.
You know what you need to do. It's not written anywhere and nobody has said it out loud. You can't find proof. There is no guarantee.
. . . but you know.
That knowing without knowing is what you need to listen to.
It's the right thing.
You know it.