Consistency is the exact thing which is missing out in the results of crypto trading (I do believe in every type of trading too). When we are completely depending on crypto trading for living which will put more pressure on our performance and it is proven that no one could make good decisions under pressure.
That is right, consistency is a word not present in crypto trading, 
. A lot of ups and downs so it's really hard for anyone to really depend on crypto trading as means to survived. You need to find a good and stable job and then continue to save enough money so that if you really decided to quit and focus on your crypto trading, you have enough leeway and will not be forced or pressure to make money day in day out.Probably in the line of 6 months to a year basket in your saving would be a good start. However, for those who have quit their job, I'm sure that they are on a struggle specially in 2018 wherein we saw the start of the bearish trend and up to this point I would say we are still specially altcoin market.