“Don’t think as a debt, just think as what you must. Because everything they did, actually for you. Happy Parent Days.”
If you want to return every kindness, every love, & everything that your parent do for you to them, don’t think as a debt. It’s a bad habit while you not recognize it, just do it as what you must, that way you can return their kindness, their love, & feeling, even they are not asking for it. try to recognize the different, then you will understand.