I think that the patience is one of the most important things after all.
If you are not patient enough, you are going to lose all your money in just a few minutes/days/weeks after you started.
Yes, patience and along with it it the effort of searching to read the fundamentals of any coin that you'd like to invest. Make your own choices and to lessen the risk of buying a coin and selling when it dump this information that you read and acquire will be your supporting ground for patience.