Does We really follow harischandra rules??

While preaching / advising the kids, we approach an issue in a particular way. But when it falls on us, the approach seems to differ (at times, diagonally opposite too). We do it most of the times, whatever be the reasons like 'to be practical' or 'to educate them' etc.,
Last week, my smallest cousin brother was called for by his school Principal to her room, along with 2 other kids. Once he returned from school, he started sobbing and told that he was called for and got advices. The reasoning provided by him was that he was amidst two fighting kids and incidentally got caught.Further queries revealed that he also beat one of those kids. Later he revealed somemore.. So, all of them together had done something and was sent to her room. The initial intention was to prove that he didn't do anything... a Kid's attitude!!!!
Advising session started.. that he should not hide things like this, blah blah.

But honestly speaking, we do hide or misrepresent certain facts in our day-to-day life due to circumstances.... Some may be obvious, some may not be.. all depends on the individual's perceptions, as to whether it is right or wrong. Few of those instances, where either I was in the receiving end or at the delivering end......
1) Hiding some actual facts from relatives or friends, assuming that they won't like it or will be hurt.
2) Hiding an achievement(!!) or acquisition of an object/asset, from those who may look into those with different eyes.. I mean jealousy ones.
3) When one of your colleague, asks you to give good opinion about him/her to a Teacher/sir/tutor - by acting as his 'Known friend' or 'Very good friend' eventhough your relationship with him/her is not as such.

The following are strange things, which you might or might not have encountered....

4) Not revealing the place of the next career move or misrepresent it.
5) Hiding a proposed holiday plan, to those who are not close to you.. even when they ask so many questions. [similar to (2) above]
6) Misrepresenting or hiding facts for business reasons... justifying them as business rules.

So, in today's practical scenario we don't follow 'Harichandra' rules. The situational demand (of hiding or misrepresentation) has become the norm of the day. In that case, how forcefully can we advise the next generation? I could realise that it would be upto some extent only. Till, they realise the trick of manipulation and cannot withstand our advices(!!).

Do you have some other similar scenario, where you were in the middle?