Living in Truth means that we deal with the Truth or verity of what confronts us and not with what we think should be happening or what should not be happening. Trying to deal with what should be is like boxing with an invisible opponent. You can swing, curse, kick, jab, and punch, but you are never going to hit anything.
So what has this to do with the night the Savior was tried? That night the Lord went to the Garden to pray and asked three of His closest friends and associates, Peter, James, and John, to watch with Him. Then he walked away, knelt, and prayed. When He returned to His friends instead of watching, they had fallen asleep. Shortly after that a mob of hundreds of soldiers and other men approached and another friend, one of His apostles, betrayed Him with, of all things, a kiss. About this time most of us would have been deep in the Pit of Illusion with thoughts such as, "Peter, James, and John shouldn't be asleep. They should have done what I asked. They are supposed to be helping me." And later, "Judas shouldn't betray me. He's supposed to support and help me. And especially he shouldn't betray me with a token of affection." And beyond that, "These men shouldn't be accusing me of crimes I didn't commit. Here I am trying to save their eternal lives and they want me dead! They shouldn't be doing this."
If at any time in the history of mankind, should and shouldn't thinking was warranted it was that night. But Jesus never sank into the Pit of Illusion with this kind of thinking. Instead He stayed with the reality or verity of what was happening, and dealt with the Truth. And what is happening? Peter in an impetuous attempt to defend the Savior has cut off the ear of a servant of the High Priest. Not burdened by what should be or what should not be, not worried about Himself or what is about to happen, the Savior sees the need of another and reaches out and compassionately heals the man.
The reason we fall into the Pit of Illusion is because we let what I call the Should Sharks take over our lives. The Savior never did that. He always Lived in Truth. He dealt with verity--the Truth. Likewise we eliminate a great deal of pain--all the Unnecessary Pain--from our lives when we stop letting the Should Sharks prey on us and instead deal with the simple Truth.
Albert Einstein once said,
"A man should look for what is,
and not for what he thinks should be"
That is great advice.