No matter how promising a project might look, especially if they are new projects just look them as if they have nothing to offer and invest only what you can afford to lose. Do not keep your eggs in one basket, do not fall in love with a single coin, no matter how good they are always keep digging, many more good gems won't hurt than relying on a single gem 💍. Be smart
Simple average calculation to understand the bad situation of any one coin. Coinmarketcap has over 2K coin, you selected single coin to invest, this winning percent will be 0.05%. your earning percent will be very low. Big investment in top coin and low investment for new coins. Bitcoin or Ethereum is for long time holders