Short answer – you cannot.

Look here, first, at the dictionary definitions. These will also give you an indication regarding how you might begin training your mind towards the application of meditation.

meditate /ˈmɛdɪteɪt/

verb

1. focus one’s mind for a period of time, in silence or with the aid of chanting, for religious or spiritual purposes or as a method of relaxation.
2. think deeply about (something).
3. engage in contemplation, be in a thoughtful state, be in a brown study, be lost in thought, debate with oneself,
4. plan, mentally; consider.

Finally, understand that the ancient practice of meditation, a practice used in diverse cultures and to diverse ends, has been traditionally understood to be one that takes a little time and attention before acquiring the ability. Take Patanjali’s Yoga Sutras as one example. Almost 2,000 years ago, the sage Patanjali was recommending adherence to a strict regimen of 6 different steps including breathing exercises, introspection, concentration and focus exercises and ethical behaviors before even approaching a state that might be called meditation.