Getting your coin to 0.5 thru trading is a good thing, why think of another kind of investment or method to spend your bitcoin when you have established your knowledge on trading. I would suggest you to continue trading and if you have enough to put up your own online store then set it up. At least you control it than letting other to manage your bitcoin.
To grow your btc it is hard to start from small amount. Going to 0.5 with trading is super difficult cause you start so low. I would advice to not trade until atleast 0.5 instead of up to 0.5. Also trading brings many risks read up on this subject and be okay with the risks before you actually start trading.