RESULT = Func(EFFORT, NOISE)
EFFORT = Your input (Decisions & Actions) towards attainment of Set Goal or RESULT.
The Success and % of Accompalishment of RESULT, also depends on the NOISE.
NOISE = Negative Impact on account of Other's Input (Decisions & Actions)
If Noise is in your Favour, then you are Lucky
i.e. 100% EFFORT gives 100% RESULT
If Noise is against you, then you are Unlucky
i.e. 100% EFFORT gives lesser than 100% RESULT
At any case RESULTS can be at PAR or BELOW EFFORTS made but NOT ABOVE EFFORTS MADE...
Hence, if anyone says I expected 80% in Exam but scored 85%, and he calls himself LUCKY...
Then its wrong statement, he scored 85% because his efforts were at par or above 85% level . This shows he has only UNDERESTIMATED HIS EFFORTS and LUCK has nothing to DO with this..
Thus LUCK just helps us in Getting desired RESULT at par with EFFORTS made and not OVER and ABOVE EFFORTS Made...!!!