Everyone has a theory, but only the ones with proof will be followed. One can sleep peacefully only when they believe in themselves and back their own theories.It's an irony that more than 90% of humanity misuse the terms - 'smartness', 'hard-work', 'IQ', 'talent' and a combination of those. This ridiculous misuse makes so called smart people live in a world of illusions making them lazy asses who fail in career's and life. On other hand, there is no one in the history who went down with hard work and not having so called talent/IQ/smartness. So, I claim hard-work is the only factor and all other word like smartness , talent, iq are useless unless backed by hard-work.
India's obsession with this so called smartness has really let the nation down. Apparently, Rohit Sharma is the most talented batsman to be ever produced with oozing game IQ and technique in recent past. But , in reality he is a big failure due to his laziness. On other hand Virat Kohli, Rahul Dravid who are extremely hardworking are always respected as they pile up runs every-time they are at crease. If cricket is religion, Sachin Tendulkar is a god . Not-so-surprisingly he was the first person into net sessions and last one to leave. It's obvious that it takes tremendous effort to make a titanium/steel knife/ sword , but it's precision reduces and gets blunt after certain use. It needs persistent effort to be maintained for the same sharpness.
If only Einstein sat idle assuming he is smart, world would have been different. Apparently all the prodigies and illustrious people used a maximum of 10% of brain and slept very less working really hard physically and mentally until they reached their goals. Smartness, talent are words like Doctorate or Sir if hard-work were the base. Even in Chess, which is considered as the sport for only smart people; Grand masters title is only awarded to world class performers who worked hard in knowing each move in 8*8 i.e.64 boxes (max. moves 13*64). I don't understand the obsession of people to be called 'smart' after-all when the game which requires a person to think 10-15 steps ahead requires immense hard-work.
"Innovations and dreams won't become reality through magic, it takes sweat, determination and hard work." Quotes become famous for one reason, they are hard to implement but soothing to listen. Parents are the main culprits in turning their children into arrogant impractical adamant stupids by publicizing everyone that their child is 'smart' in front of them. Poor creatures never understand that so called 90%s are achieved by understanding the complete text books/all-in-ones/FAQs or putting maximum concentration and persistent practice, most importantly immense hard-work. If you achieve everything with 90% , you are goal-less. Hard work vanishes,attitude remains, ignorance increases.