The main rule is not to invest in one token or coin ! Always do diversification and earn will be much easier !
In the cryptocurrency investment there is no risk if you are enriched with the knowledge it needs to end up the overall investment as a result of profit. As long as you are in the crypto world without any knowledge you will never handle it properly and hence as a result you will get just loss and nothing else. Those who are getting success here have plenty of knowledge about it that is why they have no risk here.