Think before you do..... Really?

People often say Think… Think… Think… Is it required always? We have hundreds of proverbs which asks (or threatens!!!) everyone to think before taking any action. Did we ever think what will happen if we didn’t give much time for thinking in certain cases? It may not be as bad as it looks. For e.g. I created hundreds of plans in paper after thinking for hours which eventually didn’t work J

So is it really required in all situations? Let’s see this video before saying yes with a red face.