Because we didn't do our best. We still making her disappointed, mad, sad, shocked, etc. We should angry to our self, why making her angry? Why we're so selfish? Why we can't just let go one thing? Why we always want to buy something, although it's not important?!
When our mom tells us to help her, why we say "later"? Is it too troublesome? Our mom is more troublesome to take care of us, even when we were in her womb 'till now! So... we should make her happy. :)
I wish my mom always healthy, always happy, have a good luck and have a long live. :) I LOVE MY MOM! HAPPY MOM'S DAY! :D