Light also refers to quality information, knowledge and know-how in one's carrier field.
Ecclesiastes 10:15 says "The labour of the foolish wearieth everyone of them because he knoweth not how to go to the city".
You need both spiritual and mental light to do exploits.
HOW TO RECEIVE LIGHT:
BELIEVE IN JESUS AS SAVIOUR AND LORD:
Then spake Jesus again unto them, saying, I am the light of the world: he that followeth me shall not walk in darkness, but shall have the light of life". (John 8:12)
GROW IN WORD STUDY:
"Through thy precepts I get understanding: therefore I hate every false way" (Psalms 119:105)
SEEK KNOWLEDGE THROUGH LEARNING AND TRAINING:
"A wise man will hear, and will increase learning; and a man of understanding shall attain unto wise counsels" (Proverbs 1:5)
ASSOCIATE WITH THOSE WHO KNOW MORE:
"He that walketh with wise men shall be wise: but a companion of fools shall be destroyed" (Proverbs 13:20)