Ought vs Can

Before I had even opened my eyes this morning, this thought was going through my head: there is a difference between what we can do and what we ought to do. How many times in life do we show what we can do, whether right or wrong, instead of what we ought to do?  I'm not sure why this was going through my head before 5:30 this morning or why it dawned on me I should ask this question on my blog, but here it is.