Can't is a word that paralyzes any constructive process. It switches your mind into a negative frequency. It is a four letter word that will open your mind to a never ending flow of logical, practical reasons which will enable you to justify why you are not able to do something you sincerely want to accomplish.
The only alternative to that four letter word is its polar opposite - I CAN.
I can is far more important than IQ! You don't necessarily have to be very smart to win... but you must be willing.
Consciously or not, there are existing lineages of families who have been using a specific success formula.