I set my failure or loss by waiting for the price to go down and after that buy it again at the right moment or the right moment because the price will definitely go back up, and preferably trading do not use all the money there, you put money to overcome this loss.
Putting the whole money in one investment is not a suitable idea. Before practically starting some investments, there must be an analysis of the market, the trust factor and much more credentials for the coin or source that you are going to invest into. Only then the decision should be taken with deep concern. Losses are not strange, just follow up them with good rehabilitative skill.
Do not put all the eggs in one basket and that is why we should not go all in one investment because it will just result for getting a lot of losses so if you want to be safe then invest your money into different investments so you can minimize the risk and receive better amount of profit if their market goes up.