you can grow your bitcoins through multiple ways, if you invest your bitcoin in gambling there you can really grown your bitcoin in a very very fast mood.
Well you just kissed your had earned coins goodbye forever if you settle for above advice. For one gambling is not an investment opportunity where returns can be expected to follow. Gambling is for entertainment, though you might win sometimes, but the odds are against you from the word go. So you only put in here money you can afford to throw out of the window and not your farmland.
As is, bitcoin is not regulated and I am a victim myself of exchange sites with great potentials disappearing with my coins, thus suggesting that trading is not a save haven either and that has nothing to do with whether you're an experienced trader or not. Of the bunch of ways to multiple your coins, the one most likely to have your coins intact overtime and then some extra, would be signature campaign. Might be slow if at all, but slow and steady always wins the race.