Usually when cab drivers are talking about investing in Ethereum is a clear sign that its time to sell.
Or online poker players
My mother knows about Ethereum now, and through no effort of my own, which for me reinforces that point. A massive crash is coming to ETH, I don't know when it will happen nor do I know what will happen between now and then (It may pump more before that happens, maybe not), but the point is that the time of Eth being a safe investment in long gone. The only good investment to be made in a billion+ dollar crypto currency at this moment in time is Litecoin.