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 you 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
Never keep your eggs in one basket is a good idea to reduce risk. Many project start by promising that their coin will be listed somewhere with a high price then collapse.