To do or not to?

There are many kinds of people. One who learn from other's mistakes. Two, who learn when things are told to them. Three, who learn only when they suffer the consequences of their mistakes and the last who never learn.

It is OK for one, to digest the fact that, you need to be told the consequences of one's action, but how tolerant can one be, when they never listen to what is told and that too for their own good. What should be done with such characters? At a stage you are only left to feel "Get Lost". It is even OK to ignore when their actions does not affect you but what to do in case if it is going to have a huge impact on your life.

When will they learn??? Will they ever learn???

I feel sorry for them and at the same time perplexed as to how to help them as I would be doing the same mistake of not learning.