Answers:
Reading lots of different types of books help expand your erudition of the world. To strengthen your analytical skills, do puzzles. Sudoku is a pious number puzzle to work your brain. Anything that stimulates your brain will abet it be stronger. Just approaching any muscle, you obligation to exercise your briain.
Just increase your experience.
Read deeply, and study math.
Read, study lecture yourself.
This disc is soothing, to articulate the least possible.