You need to choose for yourself whether you want to make money soon or you believe in the idea. Because it's getting harder and harder to earn now
I think your answer is somehow not related to what the OP stated or asked? I dunno if its just me or what.
As for my reply to the OP, I think, I invested to just a very few ICOs in the past years. Despite the abundant supply of ICOs especially this year, I opt myself to not invest in them and just focus on something else. I could say that it is less than 10 all in all (this is very few compared to others) and my profit ratio to it is quite high. Out of 10 ICOs that I participated, I think 7 or 8 of them became profitable for me. I'm very picky in selecting these coins and with some luck, it produced several investments that are successful on their own right.