there's no easy way.. it's all in genetics.. and diet..
cosume high calcium products like milk, cheese, etc.. at 20, you
might grow just a lil bit more..
an alternatively way is thru surgical methods.. highly suffering,
highly expensive.. highly discouraged
most of all.. with self-confidence, you are as tall as
anyone..
sidetrack.. generally, a child can grow as tall as the average of
the parents' height plus one inch..