just wondering how to determine the project won't die in the next few years?
I think it will be very difficult to be able to determine which projects can last several years. we can see that there are not many new projects that can survive in 2 years, even in the first year many of the new projects have no development.
Not that difficult to know projects that wont die in the next 5 years, first you have bitcoin and ethereum, there is no ball of contention here, there is no need for further research on them, just believe it in your mind that whatever investment you have in this coins will forever be safe.
For other coins, it is also simple to know, first, you have to focus on coins in maybe top 50 of the coin market cap, and then you research deep into their product and see if they have a real working product.Secondly, you look at their past history and how much they have been performing, these are few out of many ways you can use to discern good project.