Woow really nice you have 12 btc woow really good amount of bitcoin coins in your wallet.I think that it is better to invest 2 bitcoin in 1 revenue share site where you get 120% roi per 2 months.I offer referral cash back for that site but I am just here to help you.Just keeping your money in your wallet is very slow speed of your money growing.Your bitcoins will maybe turn to 24 bitcoins in 1 year maybe even more that is my prediction because bitcoin is growing more and more slowly and it is better to invest then just keep mone in bitcoin wallet.Also my second strategy is to trade with bitcoins and altcoins if you want you can strart with very low amount of bitcoins and when you have enought experience you can start to risk bigger amounts and get more money.