What is truthfulness?

People often say be truthful and be happy. But what is truthfulness?
Being truthful to others is not real truthfulness. Being straight to oneself is truthfulness.
Every human being has the quality of humanity irrespective of place, religion etc. Everyone is born with these qualities. We need not teach anyone how to be a human.
But after a few years we are equipped with so called intellect and with that we start deviating from humanity. Slowly we start to deviate from ourselves. We always run away from ourselves. We invented or borrowed from western how to run away by wasting time on movies or gossips or news or social media etc. All these are needed for the sake of happiness by avoiding inner self.
That's why most people cannot sit alone without talking, without watching movie or mobile or TV etc. They can not even sit for 5 mins straight with themselves as they are afraid to face oneself.
So real enemy is intellect. It's time to be straight with inner self and be truthful to the inner self. Then irrespective of situation, one can be at ease. All yogic practices are just these. To be truthful to oneself. To enhance the ability to face with oneself. Because inner self is always straight and bluntly say this way is not correct. This way is not the way human should live etc. As long as one avoids inner self then he continue to fetch happiness outside which is momentary.

So be straight to yourself and be freed from problems.