Only a prepared mind can attain marefat (God-realization) and wisdom. There was once a scientist to whom someone said: "The discoveries you people make has no role of yours. They are accidents or accidental occurrences.
That is, when you perform an experiment in your laboratory, something may flash to you. You think over it and then discover an idea.

 
For example, there is a famous incident. Once some food was being prepared in a vessel. While it was being prepared, the lid of the vessel moved up. This was a flash.  
When the scientist present there observed the event, he discovered steam power. He realized that when water is heated up to a certain extent, it gets converted into steam." 
The scientist then remarked: "Yes, discoveries are made accidentally. But these accidents only happen with scientists, that is, with a prepared mind."
So, if you want to attain marefat and wisdom, you will have to make yourself a prepared mind. 
I have understood through my study that everything has a 'content' of wisdom, or a nectar of wisdom. 
Just as flowers have nectar, in everything around us there is an aspect of wisdom and marefat. But you have to become like the honeybee. Only a honeybee, and not any other creature, can extract nectar from the flower.
If a mosquito tries to extract nectar, it would not be able to have it. A mosquito cannot extract nectar from flowers. Only a honeybee can do so. 
This is because a honeybee is prepared for this task. It knows that there is nectar available in flowers and immediately sets about extracting it. The honeybee then takes this nectar to its hive.
So if a person who wants to attain wisdom and marefat in life, he will have to make himself a prepared mind.