Yes, to commend someone lacking confidence can give that person courage to deal with obstacles, and as a result, he finds joy. Youths especially benefit from deserved commendation.
खासकर अगर जवानों को उनके अच्छे कामों के लिए शाबाशी दी जाए, तो उन्हें बहुत फायदा होता है ।