2) Observation:
A person with a good power of Observation has aiertness and a good presence of mind. E.g. Newton saw the apples falling from the tree and discovered the Law of Gravity. A very important tool for Mind Development.
3) Concentration:
Study for 30 minutes with full Concentration rather than 4-5 hours in an absentminded
frame of mind. You cannot be productive in work, study or
anything else without Concentration.
Memory cannot recall anything that was not registered in the first place or registered ineffectively. You cannot remember when you meet a friend his name; you forget the names of roads and buildings you use and pass by often etc because you never noticed them well in the first place. So we need to
ORDER OUR MIND TO REMEMBER SOMETHING VERY FIRMLY to remember it.