Many people discover that following an extended period of ill health due to an undiscovered and undiagnosed food allergy/ sensitivity/ intolerance, they discover a greatly improved level and quality of mental clarity. Once they put in place an effective exclusion diet, that is.
Often, the unwitting sufferer struggles through symptoms such as fatigue, poor sleep, inflammation, irritability, and brain fog (to name a few of the most common and most relevant ones), which drastically decreases or disappears, perhaps to the shock of the newly diagnosed patient. The sufferer will often "normalized" a lot of the of the negative effects and forget what it really feels like to be pain-free.
In the case of gluten intolerance, when the offending foods are carefully eliminated, there is frequently a profound reduction in irritability, brain fog, and an improved sleep pattern. One may feel better and better as the digestive tract heals over time, even in cases where there was long period of undiagnosed illness.
What is essential is to not squander this gift. Sure, tasty foods have been taken away from you, the very ones that where creating the pain, but they were also replaced with something. This clarity and improved mental functioning, and reduced body stress provides a tremendous opportunity to think clearly about how you feel on a daily basis, and to reassert your control over your thinking and negative thought patterns. You will have a chance to experience more effective meditation. You will discover deeper and more fruitful contemplation. With the reduction or elimination of an acute state of illness and suffering you will be able to sustain a peaceful mindful balance.
If your mind is in the right place and you are focusing on being mindfully present, you will encounter many behaviors, habits, and mannerisms that stem from being afflicted with a food intolerance, whether it is gluten, dairy, soy, or something else.
If you have been struggling against symptoms for years, then you will not have healthy responses to stresses, necessarily, especially if those stresses are connected to food intolerance symptoms. Things like body cramping and diarrhea or constipation can make your whole body tense and put you in a fight or flight response as you struggle to try to either get through the pain or make your body do something normal instead of suffering. The stress hormones and adrenaline that can get dumped into your body can have a lasting wear on your mental faculty and energy level and leave you feeling as though you ran a marathon the previous day. To some extent, you have control over these impulses and signals in your body and can head them off with mindful relaxation during times of physical crisis.
Be careful, though. Just as you may have normalized the effect of your condition on your mental, psychological, and spiritual development, perhaps calling your "rut" pure procrastination (which some of it likely would have been), quickly the feeling of improved mental condition will fade and the din of the world will once more take its place. One can even more easily normalize the improvement to an "usual" state of health. While the ability to impose change in your life thoughtfully is still present, you must focus on being present. You must now learn how to take time out to develop mindfulness. We are all capable of forgetting for a very long time of what we are truly capable.