I would say you have that the other way around. Trump with his constant lies poisoned his own well and can't handle the consequences. 

When you constantly shout of lies you can expect to be challenged. When you are in public office then all eyes will be upon you and they will be checking your authenticity. Trumps authenticity has become pretty stained because of his own mouth and that of his flakey staff like Kelly-Ann Conway.

When you lie like a sidewalk it's hard to get respect

http://www.huffingtonpost.com/entry/donald-trump-administration-lies-100_us_58ac7a0fe4b02a1e7dac3ca6