It may be surprising, but just as there is an evil inclination to falsehood, the desire to constantly adhere to the truth can be a type of evil inclination as well, one that at times is much worse than the inclination to falsehood.
Indeed, it turns out that a person can experience a spiritual fall not only by pursuing things that are overtly evil, but also by going to the other extreme.
There is a certain appeal to the notion that one must make an unequivocal decision to either be entirely good or entirely evil, but one must realize that this is a false dilemma:
Neither of these choices is the proper path.
–Rabbi Adin Steinsaltz