The Gita has declared that it is charity, not wealth, which is really important. In a similar way, in human beings, it is not the ability to speak well but the truth which is uttered, that is important. If there is no truth in your speech, then whatever you say will have no value at all. The Gita has also declared that it is not life itself but a good character that is important. A life devoid of good character is useless. You have to develop your character and earn a good name so that all the noble human qualities will shine forth in you.
Your most important duty is to harbor good thoughts, to have good behavior, to speak good words and to lead a good life. You must be very careful with your words and actions so that you will never earn a bad name. Instead of living the life of a crow for a hundred years scavenging off others, it is far better to live a few moments as a swan, with an untainted name and an unblemished character. The Gita extols such a sterling soul whose life is replete with goodness.
Good actions are far more important than physical strength. A body that is not being used to serve others is nothing but a dead body. Use your body in the service of mankind, not just for the purpose of catering to your own selfish needs. Today, whatever man does, thinks or utters is primarily prompted by selfishness. In order to overcome this tendency, you have to constantly seek opportunities to help others and develop the principle of service. In this process, by your good actions, all of humanity will get sanctified. It is very difficult to obtain birth as a human being. You must spend some time thinking over how to properly utilize this rare life that has been given to you and develop good habits which will overcome these weaknesses of desire and anger that waste your golden chance.