What ever you do @scorpion90 DO NOT LISTEN TO THIS GUY'S RELIGIOUS BULL$HIT.
Firstly, all businesses were started originally by people without family businesses, so there's his family business BULL$HIT busted.
Secondly, Islamabad is a fastly growing market, you just need to find ANY product that you expect to start selling in large numbers and you have a viable business plan.
If you are educated enough to use the internet and I see your english is pretty decent, then that means you can do better than CHAKI SHAKI nonsense and step right into some high growth cutting edge business.
In your budget and considering your intellectual capacities, you should NOT go into a manufacturing business. Step into services, retail, marketing, etc.
Also, look at successful people for motivation only, not for copy/pasting their business ideas, they might not work for you.
This is genuine advice.