If you are one of those who invested last 2018 and went all in with ETH and you are still holding it, you will definitely gain lots of benefits right now. Even now, you can still go all in with ETH because many are expecting it to have a value that will keep on increasing. The only problem right now is the value is already high so it will surely trouble you if ever ETH fails to make a bull run. You can still diversify some of your investments to other altcoins that has a potential but if you are confident enough about Ethereum reaching a $5k value soon, invest mostly there.