Loss is a part of business. I hold my coins when they are in loss if I believe in the project.
There a lot of ways to deal with loss; if I loss small amount of money, I will just rest for a while a try it again, as what others said: try and try until you become successful. To have a loss is normal, just deal with it positively.
You mean if we are lost our money, we should rest a period time and then try again... Lost, rest and try again until we succeed. Sorry but we no have much money to able to try again.
Important is what experience were we studied after everytime we were lost? Anh how to avoid this mistake in the future.
I think we should invest the time to analysis all coins which we want to buy before and then we also have to have the effective investing strategy then it will help you deal with the loss.