Although this is not an article authored by any Sikh.It is authored by a Hindu who structly belived in vedantic philosphy. I could not stop myself from sharing it with the sangat. There are many books authored by swami Sivananda. One may be benefitted. I am giving below the article by Swami ji.I received it by mail.
Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/gurmat-vichaar/18405-goal-of-human-life.html
Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/showthread.php?t=18405
hope you shall like.