For me, some ways on how to grow my bitcoin are;

-from the bitcoin i earn, half of it i maybe i would invest to gain more profit then the other half maybe i would keep it
-i will have business that is very usable in the field of everything especially in bitcoin
-trading is also a good way to grow bitcoins
-then be intelligent enough to do all of this and be wise
I know this would take a longer time to do it, but only we need is hard work.