I highly recommend you DO NOT gamble. If you keep gambling I can guarantee you will lose all the bitcoins and be in sorrow. If you desperately want to gamble badly, withdraw some of your earnings BEFORE you continue to gamble. Don't withdraw after, because if you lose temptation will grow to bet that remaining BTC. Only gamble what you can afford to lose.

If you're planning on investing it, you could either invest in some dice site's bankroll as they usually earn profit. Open a lending service and lend to trusted people among the forum. Or just keep it in your wallet and sell it for physical money when the time seems right.