There is a danger to being enlightened, that is, to seeing clearer the strengths and flaws of oneself and others. Both involve a spiritual blindness. The first risk is having greater light to see only the neighbor's imperfections all the clearer and assume one's are fewer and one's own strengths an all encompassing coup de grace for oneself mistakenly. The second is to see one's own faults as so numerous and pernicious and insurmountable to any growth or change that one gives up out of hopelessness, causing one not to help the other improve upon their imperfections for fear of one's own imperfections despite being called to do so out of sweet charity.
Both of them cause a seizing up, a squelching of spirit and, therefore, quenching of light. The first clenches the heart to compassion given, and the second clenches the hand to mercy bestowed. Both must be avoided in the pursuit of one's high calling to holiness and any dispatch away from Love's sweet gifts ignored, for one, like Mary at the feet of of Jesus, "has chosen the better part, and it will not be taken away..." (cf. Luke 10:42).