The Truth (part 1)

The truth will set you free, but first; it will piss you off.
This is a popular line from a movie or motivational video that I cannot really recall the name. 
So the critical questions are;
a. Why must it piss you off if it will set you free
b. Does it piss you off all the time?
c. What is true vs What is not true
d. Is this always the case

Why Should it piss you off if it will set you free
Indeed, I have pondered about this topic for a long while.
Something that will set me free should at lest give me a gleams of freedom
It should make me feel the following;
a. Happy
b. Confidence Boost
c. Relaxed 
d. Positive feeling
The list goes on and on and on. But my answer is I DON'T KNOW. It depends on a lot of factors which is beyond our control. 

I will like to hear your comments, thank you.

References (Example)

[1]
[2] BULB, 'Write to Earn. Read to Earn' (online, 2022) <https://www.bulbapp.io/>