Seeking Alpha Seeking Alpha Portfolio App for iPad  Perhaps the
most important investing lesson I got from Warren Buffett was
the concept of having a "punchcard" limiting the number of
investments I can make. Buffett has suggested an investor should
be given a 20 hole "punchcard" at the start of his investing
career. Yes, Buffett meant only 20 investments allowed over an
entire career. By being limited to only getting to make 20
investments over a career, Buffett suggests each decision would
be considered much more carefully and performance greatly
enhanced.  Buffett certainly adhered to that philosophy as he
made his way to becoming one of the richest people on the
planet. Much of his billions can be attributed to just a few
great investments.  Two that stick out are Buffett's investments
in American Express (AXP) and Coca-Cola (KO).  In 1964 American
Express shares were clobbered as the result of fears over
potential liability the company had in relation to the infamous
"salad oil scandal." Buffett did his