It is all right if you arrived a little late for as long as you can still join comfortably. I also came a bit late but I still made a considerable profit from Bitcoin. The train still has a lot of space available. Everyone can still hop on at this point and become richer in the years to come. I think you should not exert much effort in looking for the next big thing. Bitcoin, Ethereum, Cardano, Waves, etc. may be big from our perspective right now but they are getting bigger and bigger still.