Consider our brain as an area of a sheet of an A4 size paper. Consider this page contains our thoughts and each thought occupies, say, one square cm of area. That means our brain can contain some 625 thoughts at any time. Right?

What happens when one thought increases in size and starts to occupy more area? The other thoughts will get squeezed and will be pushed outside the sheet of paper. If the paper size cannot be increased, some of the thoughts will be reduced in size to accommodate the Larger thought.

When we make that one thought larger than others, it becomes Focus. Here we have complete control on that thought and its size.

If we don’t have control on a thought and if it increases in size, it squeezes all other thoughts and make them negligible in size. We call this Stress. 

The single large thought would eventually tend to move or expand on all the directions and in the process push the other thoughts harder. When the page has fixed boundaries, the large thought itself gets squeezed and tends to tear the paper along. Is this called Depression? 

The catch is, each thought is associated with our feelings. An uncontrolled, growing thought leads to uncontrollable feelings or emotions. Whereas, a controlled thought, when we grow it larger, becomes FOCUS and is often associated with supportive feelings.