Rakesh Jhunjhunwala's tip on How to find multibagger stocks

Tip No. 1: Don’t Look For Multi-baggers Don’t seek them at all. Let the multibaggers come to you!Rakesh Jhunjhunwala, the Investment Guru,  says "Go back to the old-fashioned way of making investments designed by investment maestros Benjamin Graham, Peter Lynch and Warren Buffet". "If your homework is right and you have invested in fundamentally sound companies with good growth prospects, your investments will by themselves become multibaggers with the passage of time".
Tip No. 2: Don’t Look for Profits; Look For Sources Of Profits
Tip No. 3: Forget ‘Large Cap, Small Cap’ Nonsense – Look For Scalability Of Operations
Tip No. 4: Give it Time, Be Patient
Tip No. 5: Don’t get carried away by short-term aberrations
Tip No. 6: Invest in a business that you can understand
Tip No. 7: Don’t worry about the macro stuff like fiscal deficit, inflation etc which are unknowable. Focus on what is knowable
Tip No. 8: Don’t Try To Time The Market
Tip No. 9: If it’s cheap, buy it- Don’t pass up something cheap today in the hope that it will get cheaper tomorrow
Tip No. 10: Don’t buy stocks that have a fixed return
Tip No. 11: Ride your winners!!
The one question on everybody’s mind is "When do I sell my multibagger?" Rakesh Jhunjhunwala answers with aplomb "Never". 
One must be careful to understand what Rakesh Jhunjhunwala is saying here. What the Greatest Investor in India is saying is: "Don’t sell for the sake of selling because you can never say that the 10-bagger today will not become a 20-bagger tomorrow".
But, Rakesh Jhunjhunwala hastens to clarify that this does not mean that one will never sell a multibagger. He gives two situations when even he may sell his beloved multibagger. The first is when he is short of funds and he needs capital to invest in a stock that will give even better returns than what the existing one will give. And second, when the stock market has become so irrational that the perception of earnings and the P/E is unsustainable. Rakesh Jhunjhunwala gives the example of what happend in 2000 when euphoric investors laid bets that Infosys’ earnings would double every year for the next 10 years. Infosys’ P/E at the then current earnings was 100-150 times. So, says Rakesh Jhunjhunwala, when the expectation of earnings peaks and the P/E is unsustainable, that is the time to sell.
Tip No. 12: Concentrate, concentrate & concentrate!!