I believe in holding. Holding is the best way to earn money in the cryptocurrency field. There are many ways to make money here but if you have a good capital, just put your money in some top 10 coins and hold them for at least a year. After a long term holding, I can ensure that you will earn a huge amount of money 
You can see that the market is currently in the bearish trend in the long term, so I believe that if you continue to hold the bitcoin or altcoin you will lose a lot of money. You can see that the price of bitcoin and altcoin in the past few days has been steadily decreasing, the bitcoin price dropping from the $ 8200 mark to the $ 7500 mark has pulled the altcoin price down very deep. So, I think that this time you should only trade the day so that you can minimize the risk.