Three Factors for Lasting Memory

1.  Rethinking of the same and making recurring impression

2.  Knowledge & experience received with concentrated and

     willing mind.

3.  Incidents with deep impact.

What we think again and again gets lasting memory in us naturally.  Whatever we do with involvement, interest, love and concentration leads to lasting memory.  We need not take any efforts, they get recorded deeply.  Some unforgettable incidents such as death, love failure, disappointment and loss of our close relations leave deep impressions in our memory.