- Invest in businesses that have great demand(Needs of people).
- Start with a franchise, dont start from "0"
- Invest with people who understand business and who have already done business before
- Don't invest all of it at once
- Doing business is Qatar is extremely different than doing in other parts of the world (legally different and the market is also different)
- Try to experiment your idea before starting BIG (Get the market insights) etc

Hope this all helps