memory retrieval and intuition

Sometimes when we try to recollect some simple event or name that we know is in our memory we find the recollection very difficult. The more we try, the more it becomes elusive. But when we do not even try to think about them at all, the memories pop up to the surface of the mind. There is some similarity between this and the solving of mathematical problems. Several times during my college days I have struggled with one or other problems in higher mathematics till the dead of night, and had finally given up as unsolvable before going to sleep. But early in the morning while taking bath or brushing teeth, the solution glared at you with a bang when it was far from my mind.
Retrieval of memory is also I think more intuitive than deliberate. A stored item just jumps to the surface without warning. What triggers the memory to push it out has to be explored. Send the request to the memory for the retrieval of an item specifying the details and wait? No. Not that alone. There should also be an intense desire to remember the event or name; but should not think about it anymore. In the case of an intellectual or mathematical problem, state the problem in detail and think about it for some time. Then leave it and wait with the wish to have the solution. It is important to retain the desire to have the solution. Recognize it when the solution appears sooner than later!
But howsoever intuitive one might be, what surfaces from the memory may not be recognized unless the equipment that receives the intimation and presents that to the awareness is working properly and is toned up. Any intuitive signals from beyond also can be recognized only by a properly tuned up mind. Otherwise it will be like the broadcast signals received by defective TV or mobile phone.
A defective or damaged mind worn out by age and not receptive to anything new may be able to receive and recognize only very few intimations if any, from beyond. Or none at all.
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Depression is physical?
Generally depression is thought to be mental. But I find that depression is not entirely mental. Actually it is more physical than mental. When a person is very active and bubbling with health, he cannot be depressed. Physical health reduces the possibility of ‘mental’ depression.
But doubt can arise that the physical well being is the a result of not having mental depression, and that mental condition is a prerequisite for physical health. May be true. Both are definitely interdependent.
Yet I notice that whenever I am depressed, I can invariably trace it to some uneasiness in the body, which is yet to be manifested into a recognizable illness. Once it is recognized, even if it is to be yet cured, the depression vanishes. Or it can be easily controlled.
I can feel or perceive almost every depression in me whenever it occurs as a physical condition. Depression can be felt as a physical discomfort if one is attentive enough to the goings on inside the body and mind.