The groundwork of all happiness is health
Rest or relaxation slow the heart rate, reduces blood pressure and slow the rate of breathing, which reduces the need for oxygen, increase blood flow to the muscles and decrease muscle tension. Rest or relaxation results in more energy, better sleep increase concentration, greater efficiency, better problem solving abilities less headache and pain.
Big things are in store for one who develops the habit of observing little things in life-Sidney Newton Bremer
He who has not lead up any materials can't produce anything
To get idea you must observe
You need analysis
You need faith