Physical wounds will definitely bleed and may look painful
but over time they heal by themselves and if you apply medicine,
they will heal faster. What's troublesome are wounds of the heart. Nothing is harder to heal. They're a bit different from physical injuries. You can't apply medicine for one thing and sometimes, they never heal. There's only one cure for a wound of the heart.
It's a bit bothersome and you can only receive it from someone else. What is it? Love.