Original and Personal Sin

In today's lesson in Religious Education we learnt about original and personal sin. Original sin is where you are thinking of do something in your head that tempts us.  Personal sin is where you do that thing that you were thinking about, like say if there was a donut in someones bag and you were really hungry and you just take it and eat it that would be a personal sin but if you were just thinking about it, it would be a original sin.