¹Ì±¹ÀÇ ÀÓ»ó ½É¸®ÇÐÀÚÀÎ ¸Þ±× Á¦ÀÌ ¹Ú»ç´Â ±×·± ±×µé¿¡°Ô ÀÏħÀ» °¡ÇÑ´Ù(give an admonition to the point). 20´ë´Â û¼Ò³â±âÀÇ ¿¬Àå(an extended adolescence)ÀÌ ¾Æ´Ï¸ç, À̶§ÀÇ 10³âÀÌ Àλý Àüü¿¡ ¾öû³ ¿µÇâÀ» ¹ÌÄ£´Ù°í(have an exponential impact on a whole life) ¸»ÇÑ´Ù.
±×¿¡ µû¸£¸é 20´ë ¶§´Â ÀÚ½ÅÀÇ ¼º°ÝÀ» ¹Ù²Ü(change their personalities) ¼ö ÀÖ´Ù. ³ª¾Æ°¡ ¿î¸í±îÁöµµ º¯È¯½Ãų ¼ö ÀÖ´Ù(alter even their destinies). ÀλýÀÇ ±× ¾î´À ½Ã±âº¸´Ù °áÁ¤ÀûÀÎ(be more decisive than at any other time in life) ¹ßÀüÀÇ ÃÖÀûÁ¡(a developmental sweet spot)ÀÌ ¹Ù·Î ÀÌ ½Ã±â´Ù.
Àΰ£ÀÇ µÎ³ú´Â 20´ë ¶§ µÎ ¹øÂ°ÀÌÀÚ ¸¶Áö¸· ¼ºÀå ºÐÃâÀ» ÇÑ´Ù°í(have its second and final growth spurt) ÇÑ´Ù. ¼ºÀÎÀÌ µÇ±â À§ÇÑ ¹è¼±À» »õ·Î ±ñ´Ù´Â(re-wire itself for adulthood) °ÍÀÌ´Ù.
µû¶ó¼ º»ÀÎ ÀÇÁö¿¡ µû¶ó(according to their own willingness) ¹«¾ùÀÌµç ¹Ù²ã³ª°¥ ¼ö ÀÖ´Â ÀýÈ£ÀÇ ±â°£ÀÌ´Ù. 30´ë°¡ µÇ¸é ¹ú½á ½Ã°£¿¡ Âѱâ°Ô µÅ(be pressed for time) ªÀº ½Ã°£ ³»¿¡ ÁïÈïÀûÀ¸·Î(on a whim) ó½ÅÇÏ´Ù°¡ ³¶ÆÐ º¸±â(be shot to pieces) ½Ê»óÀÌ´Ù.
Á¦ÀÌ ¹Ú»ç´Â 20´ëµé¿¡°Ô Á¤Ã¼¼º À§±â´Â Àؾî¹ö¸®°í(forget an identity crisis) Á¤Ã¼¼º ÀÚ»êÀ» È®º¸Ç϶ó°í(get some identity capital) Á¶¾ðÇÑ´Ù. ÇöÀçÀÇ Àڽſ¡°Ô °¡Ä¡¸¦ ´õÇØÁÙ(add value to who you are) ¹«¾ð°¡¸¦ ½ÃµµÇ϶ó°í ¸»ÇÑ´Ù.