There is a lot of ways on how you can grow your bitcoins First lets go to trading,investing in traidin is the best way to grow your bitcoin an ensure earnings,but be wise on what you will be trading on trading sites.Second is gambling,damn too risky but can give you a lot of profit.Investing on cloud mining this way is a slowly  but surely earnings.Last is HYIP, just like gambling HYIP's are risky too and  can give you profit