There sure are a lot of self-improvement materials/techniques out there. Many are successful.

Curious: If you were to list 4 traits for success, what would you list?

Mine are:

1) Ambition -- I define it as great desire to achieve your goals.

2) Openness -- as related to learning, and keeping an open mind
with others and their opinions (doing it here ).

3) Decision Making -- or being decisive, especially today
when most people are afraid to pull the trigger.

4) Leverage -- as related to leveraging time against revenue opps.