(By the way, he—along with basically everyone else who's ever read what I've written, heard me speak, etc.—knows that I have Depression, OCD/Anxiety, and ADD. He also knows how I've seen my family destroyed by when they've not admitted that they have conditions such as Depression, not to mention comorbid conditions such as Alcoholism—which, for example, destroyed my great-great-granddad Julian Czerniecki as he coped with Depression that was exacerbated by having to live as a Crypto Jew in order to survive the pogroms and then Anti Semitism in the United States.)
At some point, it's wrong of him or her to not admit it if he or she is able to admit it. Jesus, as they say, didn't call us to act like we're perfect and (forgive the language) we have our shit together. Besides, as Jesus Himself said, He called the sick and not the well. How many people without mental illnesses and/or other disabilities and/or circumstances in which all seems well turn to Jesus? Very few if any at all. Why? Again as Jesus said (and He said this through his apostles), He doesn't call many according to the flesh.
One example of this is when a guy sitting next to Max Lucado (as Max Lucado recounts in 3:16) told him straight to his face that because he has a good life, "I don't need God." People who don't (or apparently don't) have thorns in the flesh and/or bad circumstances don't want to think that they need God. After all, why (they think) should they need God if they don't need a Great Physician, an Advocate, and a Wonderful Counselor, let alone One Whom can guide them to good doctors (including psychiatrists), advocates, and counselors whom are physically present and directly treat them on Earth?
Of course, very few people would ever say that they don't need God because they have a good life! As I've seen, most people who say that they don't need God say that they don't need God because they think that they can be good enough without Him or think that they already have Him in their hearts.