No one will give you 10 btc for free for sure and if you want to earn it on your own then you really need work very hard on it as 10 btc is not a small amount to hold.
Anyways, receiving that 10BTC is surely a wonderful event and I should celebrate if that ever happens to me. I mean, imagine receiving 10BTC without really doing anything. I'd cash 'em all out and spend them to my heart's desires. Mostly to house improvements and land investments though. It's a good business.
Yes encashing them and investing that money in real business is the right thing to do and if you are looking for higher profits then you should simply hold them.