AGE, EXPERIENCE AND RELIGION ISLAM
Allah knows what is in our hearts. Age 40 is the turning point of one's life. Most of the Prophets (peace be upon them all) were granted Prophethood also around the age of 40. Before that no matter how intelligent we are, we may not be able to perceive things rightly. Number of years combined with experiences in life can make us form solid statements about life.
As far as religion Islam is concerned, guidance comes from Almighty Allah only. So we have to put strong belief in Him above all and nurture deep love for His Dear Prophet (pbuh) in our hearts. Only then we can achieve the right spirit of 'deen' but we have to continue with our hard work not worrying about passing years. Allah knows what is in our hearts and He knows what is best for us!