I believe that the return from these points will take place. So I do not think that those who leave these places will be able to get back from these points again. I hope these points will make your points suitable for return.

 

You can buy and sell anytime if you always have an effective strategy to maintain or earn more value. 

If you're a beginner, then the best thing for you to do is just buy and market price  and learn how you can eventually find better ways to get more value for what you spend.  You learn how to read order books.  You learn what it means to be a maker/taker.  You learn how to sell an asset, say BTC, when it's high and buy back in at a discounted price.

If you know how to reference fundamentals and technical analysis, one can buy and get the most bang for their buck.  Not only will you learn how to buy and hodl, you'll learn how to sell and accumulate.  That takes time observing the markets, learning the concepts/strategies, mock trading/trading, and trial and error infused with skill and luck. 

Until then, buy and hold. 

If selling btc now I'm sure it was the wrong decision, you invested in it, have to believe, now is the right time to buy rather than sell.

These are the laws of the market
The idiots enter the market to enrich the smart and professional traders.
Cowards can not afford to take the burden of the right decision
So they have panic and run away, and skilled fishermen catch these mistakes And make them wealth

I think is a choice now... When to sell or to even buy. The market is not longer friendly for users and keep dropping everyday. The money you keep sometimes will be dropping everyday in your front nothing you can do.. I think the best way is to sell or you wait until everything goes back to normal. We are currently in what is called bearish period. We can control the market to favor us only.. Who can get more coin.. Just also better buy and hold.

Selling bitcoin today is not a good decision or good idea at all. The price is low and if you are going to sell it, you will just have a low profit. It is better to wait and have a high profit.

I understand that people have different views against Bitcoin and also different goals when they invested in Bitcoin.
Amongst these people, a lot of them see Bitcoin as a type of high risk/ high rewards "investment " , or simplly speculation. Since it is an obvious bear market for cryptocurrency at the moment, and people tend to chase the market ,so that's why we see many people are selling to stop loss. In this regard, it is totally understandable and that's why most people don't make money with any type of investment if they chase the market.

People who believe in Bitcoin, by contrast, mostly would HODL at low price or even buy more. Some may not even consider to exchange Bitcoin for fiat forever.

Different people sells for different reason. Some new or inexperience investors sell to minimise their loss while some experience trader who believe there might be further fall sell to rebuy back at a cheaper price. It all based on believe, experience and expectation.

the exchane sell the btc.they control the BTC price. Then we should draw all  from exchane wallet.