Should I sell or hold my ETH?
OR WAIT IT JUST HIT 800$
The next time Ethereum coming close to 400$ could take some time. Heavy loss in the crypto-currency market will deter inexperienced investors for some time. Insiders will know that this is just a phase. In fact, some of them knew a correction was coming. However, Do not trust my opinion because I am not going to provide you any data for the above statements.
For your case, If you can live without using that money elsewhere then forget about it for some time unless you have other channels to recover your losses. In addition, you can keep your investments and read more about Ethereum as a platform and the altcoins based on it. Know where your money is, in and out and then make a sensible call.
If you are confident about your investment, then do not be deterred by losses. Instead, re-evaluate your position and understand whether you bought it overvalued or not. Re-evaluate the vision you had when you made the ‘buy’ decision. If you arrive at a conclusion that you bought the commodity overvalued, then you have an opportunity to lower your position by buying low. If you think that it is undervalued then take further steps with respect to your expectations. I would also recommend you to use real life references to get a sense of value rather than succumb to plain speculations. For instance, Market cap of similar stock / commodity data will be more helpful rather than statements like ‘Ethereum will reach 1000$ by the end of the year’.