And while it can be challenging to make people see the spiritual component of their problems, it can also be a challenge to help other people recognize that their spiritual issues might also have a psychological component, he said.
Some devout Catholics see it as preferable to say they are suffering from something like the dark night of the soul, rather than to admit that they have depression and may need medication and counseling, he said.
"In some ways in our Catholic community, it's cooler to have a spiritual problem than it is to have a psychological problem," he said. "The problem with over-spiritualizing is that you cut yourself from so many tools that psychology and even your faith could have to help you to be happy."
Many of the things psychologists do to help their patients includes teaching them "recipes" for happiness, Langley said - re-training their thought patterns, providing practical tools to use when anxiety or depression kick in.
But a person who doesn't recognize an issue as also having a psychological component may be resistant to these methods entirely, including spiritual methods, he said.
Catholics who are concerned about seeking psychological help should seek a Catholic psychologist or psychiatrist who can talk about both the spiritual and psychological aspects of healing, Langley said.
"People who don't practice from a Catholic or spiritual perspective can do a pretty good job, but it's like they're doing therapy with their hand tied behind their back, because they're missing out on a whole array of things you can do to help a person."
Therapists who aren't practicing from a Catholic perspective could also do some unintended harm in their practice, Langley noted. For example, men who are addicted to pornography may be told by a secular therapist that pornography is a healthy release, or couples struggling in their marriage may sometimes be encouraged by secular practitioners to divorce.
It's really a false dichotomy, Langley added, to categorize problems as strictly spiritual or psychological, because oftentimes they are both, and require both psychological and spiritual treatment.
"So much of good therapy is helping a person get back in touch with their sense of dignity that God created them with...and as they get more in touch with it, they are actually just more open to God's love and they're more open to making changes in their life that might be helpful."
What needs to change?
The Catholic experience of mental illness varies. Some found their experience of a mental illness diagnosis in the Church very isolating, while others said it was a great source of healing and support.
Langley said that for the most part, he has a great relationship with the clergy in his area.
"Most of our referrals come from priests," he said. "I hardly ever see a priest that is overly convinced that something is spiritual. I think priests really do a pretty good job of saying when something is more psychological."
Some of Langley's favorite clients are those who are seeking spiritual direction at the same time as therapy, he said, because between therapy and spiritual direction, the person seeking help is usually able to find the right balance of psychological and spiritual strategies that work.
Others said they felt the relationship between psychologists and Catholic clergy or other leaders could be stronger.
A licensed marriage and family therapist in California, who asked to remain anonymous because he was not authorized to speak to the media, said that priests and mental health professionals should be working together to support those struggling with mental illness, to make them feel more welcome, and to let them know what resources are available.
"The faith community hasn't done a great job reaching out for support for those within the community with mental illness, and the mental health community hasn't done a good enough job making itself available to the faith community," he said.
Several Catholics who have had mental illness also said they wished that it were something that was discussed more openly in the Church.
"I have thirsted for greater support in the Church," said Erin, who has depression and anxiety.
"That is my biggest struggle as a Catholic with mental illness: not necessarily focusing too much on the spiritual aspects, but people not knowing how to address any other aspect."
She had some suggestions for Catholics who find out their friend has a mental illness.
"As Christ would do, and as Job's friends failed to do, please, please just walk with me. And if I bring up something spiritual, feel free to talk about it. If you think I'm shutting you out, ask. If I randomly start crying, hold my hand," she said.
"Finding support in my one friend (who also has a mental illness) has done worlds of good for me. Imagine what could happen if Christians became more vulnerable about their mental illness. What a support system that would be!"
Michele said in sharing her story about seeking therapy, she has been surprised at how many Catholics have gone through similar experiences.
"I try to be very open about it now because a stigma should not exist."
Catholic psychologists in your area can be found by searching at http://www.catholictherapists.com/ or at https://wellcatholic.com/. The National Suicide Prevention Lifeline can be reached at 1-800-273-8255.
Some names in this article have been changed for the protection of privacy.
This article was originally published on CNA July 1, 2016.