Juliana of Norwich offer this about “spiritual blindness”

Juliana of Norwich, a 14th century anchorite and Christian mystic, spent her life with very little social interaction. In her writing she discussed “two kinds of sickness” that block our path with “spiritual blindness” (PF Chambers, p 98). The first “sickness” is impatience. We get fed up with our continuing sinfulness, with the lack of change in our heart and actions. Unable to stem the flood of our own thoughts and desires, we charge forward. We try impatiently to fix ourselves and to pull God into our willful plans. We fail of course. The second “sickness” that Juliana wrote of is “despair, or doubtful fear” (98). We doubt if we have ever truly believed. We fear that we can never do what God wants us to do, despairing that there might be no spirit in us to do so. … As Christ tells us, the need is not mental toughness but childlike yielding. We are saved by abandoning self to “the mind of Christ” (I Cor. 2:16)—not by some adopted pattern of mental discipline. The Lord knows our limitations and our struggles and our frustrations. And yet to Juliana he said, “I keep thee full surely” (100.) And, however stressful or dark our day appears, Christ is keeping us too. (Quoted in Turning Aside to See, chapt. 10. ©️ 2011)