It has been reported that Imam used to deliver lectures at Salmasi mosque in the holy city of Qom several decades ago. The lectures attracted a lot of semnary students to such an extent as the hall had become full of seminary students.
Imam during his lessons always advised his pupils to weed out spiritual deficiencies and instead decorate themselves with divine virtues from very young age.
Imam used to recommend that getting rid of moral decline was too easy during youthood. It becomes difficult and hard to give up bad habits during old age as these all take strong roots in human soul.
Imam always advised to undertake serious efforts to educate and decorate themselves with morals at very early stages.
Extracted from a collection of memoirs about Imam Khomeini