We all see that bitcoin is down, so all other altcoins are also down, which is normal, have witnessed this kind of dump so many times so I dont really panic that bitcoin is down and other altcoins are also down, I believe the only people that should panic are the newbies but as a professional you should have witnessed this multiple times so you shouldn't panic because we all know the market will bounce back, it might take time before it bounce back but it will definitely bounce back. So the best thing to do now as a trader is to Hold and if you are having extral money you won't be using for now, you can still bag more bitcoin and wait for the bull run. Actually nobody knows when the bull run will come but it will definitely come.

This exactly why you are always told to not invest money you can not afford to lose. Once things go sideways, you are bound to get depressed, which is not good for your health.

One of my portfolios is down by around 50%, but I don't really care about it even if it goes to 99%. The goal is to hold for long term and never accept to sell off at a loss during a bear market. If the price goes up, well and good.

Far worse trends than this have ever happened.

Depends on what you wanted to achieve with this portfolio. If this is an ideological HOLD for your favorite coins, then nothing terrible happened, because they have not gone away, but if you wanted to earn money, then you should understand that the risks here are exactly the same as in all investment projects

If your portfolio is down 70% then you aren’t properly invested. Hopefully your entire portfolio isn’t made up of only cryptocurrencies.  A proper portfolio should be well diverse and the exact reasons are clear to see in the current environment where most everything is getting slaughtered but not in the same fashion. Own traditional investments, precious metals and other assets besides just cryptocurrency.

Your portfolio down until 70% better keep hold it and waiting time take recovery or make cut loss when your portfolio down under 40% or 30%. Still the same with you I got down portfolio and have been 1 years waiting when price going up, but my portfolio down under 40% and have take recovery last several months, but sadness not selling my altcoin until get down again and loss opportunity to get back my capital. I think not have to worried if you hold potential coin your portfolio will back to the top price, keep hope and don't forget pray every time get back your altcoin holding reach higher price.

Yes, it is quite possible that this is not the price bottom yet. There are forecasts that the cryptocurrency can also fall by about 40-50 percent even longer. There was already a similar drop in the first half of 2018. But then the bearish period lasted one and a half to two years. I don't think it will happen again. I think that in the autumn the cryptocurrency will gradually recover and will continue to grow. But summer will still be about the same. But in any case, it should be remembered that the cryptocurrency market develops cyclically and a big drop will be followed by a big rise.

It is not uncommon for crypto assets to experience a 90% downturn.  It's happened before and it will likely happen again.  Just don't double down or do anything crazy like take loans to try and catch the bottom.  It is quite possible this market too experiences a 90% drop, and if so there's still a long way down from 70%...  Brace yourself if you're going to hold, but make sure you're committed.  If you hold for a while only to sell the absolute bottom when it hits, you won't be doing yourself any favors.  That's why they say to only invest what you can afford to lose, that way you'll ride out the bottom.

I think it's still safe to ask him to hold for the long term without selling anything if the OP only has bitcoin in his portfolio. But if he has a non-potential altcoin then I'm not sure if a long-term hold will bring it all back for him later. Obviously bitcoin has great potential to score new ATH in the future so the best advice for that is to hold it.

I can think that the OP's losses are cumulative from the altcoin and bitcoin because it looks like the OP would never have lost that much if he had only bought bitcoin on ATH last year. Nonetheless, I think hold is the best advice for him right now especially if the altcoin he owns have good potential to come back at the highest price.

This is just the beginning, you will still experience more decline in your portfolio when the  market turns more bearish so be ready for that. However, this is what all smart investors have been waiting to come, to take advantage of the current bear market and buy more bitcoin while they are not yet recovering. Otherwise, you will never enjoy the bear market and lose the chance to build your wealth in your portfolio. As no one knows how long this bear market will be, i think its best to just enjoy doing DCA until you ran out of your funds allocated for your investments.

We all do have the same opinion about bitcoin's future and it's possible that it will reach another ATH because that's what we've seen in the past. It won't be stopping to the last ATH that it did and it shall be greater than what it has reached.

And when it does, those who have prepared and held for a long time hoping for the comeback of bitcoin together with their holdings, they'll all be winners and so are we.

Just don't sell at losses and if you're too patient, you don't need to do anything but only hold.