If it fail then it will cause too much stress. The risk must be minimized, cryptocurrency is not the only one invesment that can grow our wealth. Atleast we must have 2 kinds of income. 1. Steady income even though there are few in number 2. Unsteady income that the number continues to grow. Only full time trading is not so good for our emotions, we will get more presure if we rely on full time trading and it can disrupt our trading plan.