why is 7 a lucky no

I was born on the 7th day of the 7 month in the seventies, maybe i was even born at the 7th minute of the 7th hour, i wouldn`t really know, but my life is supposed to be a lucky one. My dad told me that the year i was born was when he made his money.Naturally i looked forward to celebrating a "triple 7" birthday and dancing to shina peters` "ACE". Well i didn`t do that and i didn`t feel lucky that day either. But what i know is that my life is one hell of a bestseller novel, somehow the milestones in my life too have been achieved by the grace of God..... .a bit of luck?, am not sure. Iwill recount as far back as i can and then maybe u can tell me if 7 is actually a lucky no. my entry into high sch. I can`t say how cos i was only able to answer 37 questions in the entrance exams (note the 7 again)and the school was supposed to be very competitive one. Well i got admitted sha on merit which came as a surprise cos my family friend who was later the head boy of the school got admitted thru a waiting list. i entered university in another 7th year,and almost missed graduating with my set but again at the last minute my name was included with the graduating list(details of that story is for another day).i eventually did not do the compulsory service year with my set due to another omission in the list sent to NYSC, but then again 7 days to the day my mates were to resume camp, i got a call for a job interview i did not lobby for, and eventually got a job that paid better than what i would have earned if i had served.Now to the present day, and my lucky 7 streak, i got married on the 27th day of the 7th month and of course my baby was born on the 17th.so what do u think.............. ciao