If we use our skills and abilities often enough,
We can improve and perfect them but most of us do not sharpen our skills.
like tools left unused,
They will......

Otherwise,
become useless,
The success of sports-persons,artists and performers
is no assured by their talent and promise alone...
It is regular and efficient practice
that enables them to improve their performances and achieve perfection in them.

Practice can be so effective that,
even if we are not sufficiently talented,
It will help us achieve a satisfactory level of performance...