My opinion. for what is stable and good earnings in the crypto currency. It is necessary to work out the strategy of its development in it. Think about how to invest correctly and on time. To minimize risks and losses. And also always have a stable income.
Nothing is stable in cryptocurrency only the stable thing on it is the unprecedented loss of everyone who are getting scammed by ICO's. There's a various way of getting profit first is to scalping or what they day trading and another one is doing an intensive research through out the ICO and hope for the success of it.