I think everyone here regrets some sell of BTC in a low value 

I regret not to sell at 19.5k USD and wait to buy again in the crash, maybe Tom bought again his BTC and had profits

It's impossible to predict the price and we should not be thinking about the past, the pizza guy is the most famous person who spend a bag of BTC for a cheap price, but what if after that, BTC crashed to 0?

Well actually I think it is their own personal choice , if he wants to encash then ofcourse no one can actually stop anyone.
He might be trying to influence the public by actually posting it online on Twitter thinking people will follow , well I think this is what he was trying to do.

There is a lot of difference between actually doing and then just talking about it.
Thus I think just ignore and do whatever you like.

Thats how people became millionaires.

You say this because you know the price has dropped to $3000 last year. With all the hype during the 2017 bull run the price could have reached even $40,000 a month or two after the near $20,000 peak. The market was so thin at that point due to how people just didn't want to let go of their coins, that $40,000 wouldn't be all that far-fetched.

I'm pretty sure that you would feel bad having sold at $19,500 while staring at the price that broke through the $30,000 level. In hindsight we all could have done things better.

Also, people who usually say that they will buy low, will mostly keep waiting because even at $3000 they think it has more room to the down side.

There will always be regrets in life but hopefully I'll not regret the same things in th near future. What I'll do is to make sure to hold every bitcoin I'll habe until I see the best profit I can ever have that will satisfy me, that is what I'll definitely do.

Bitcoin prices are always changing and like anything else, you gain nothing if you never take the risk of not gaining later. Hindsight is 20/20. Just keep HODL’n

The USD is far from collapsing, and there has certainly been no semblance of  any collapse from 2011. This is all on BTC, and the growth of the ecosystem and the community backs it up.

As for replicating a scenario like this, I feel like we should stop looking at percentage points for some perspective. BTC has grown by about $10k per coin since then, so the same amount of growth would only really take us back around to ATH. Bitcoin still has a lot of room for growth for sure, but I don't think selling at $10k will ever sound nearly as ridiculous as selling at $14 with current prices at $10k.

If the story like Tom, there are a lot of people who get that experience. Maybe what make it different is some people not share their experience and no one know they are regret or maybe too embarrased to share it.  
But something that i learn from bitcoin price that keep increased is keep grateful as long you not lose in trading.

The key to success lies in the last part of his statement and that is that he sold the coins to recover his initial investment. You are risk free when you get back your initial investment capital and that should be your primary goal. I was one of the lucky people who bought early at a low price and got back all of my initial investment capital and also 800%+ profit on that investment. 

So, set your target first to get back your initial investment capital and then use any profit after that to "wait" for the big payday. Tip : Never sell all your coins, because you do not know when the price might go to the Moon in the future. 

Just to point out, it wasn't a win. Tom actually says he is cutting his losses, so he must have seen an ATH... Too lqzy to look up what that might have been in 2011 but drawbacks of 95% have been seen with Bitcoin after ATHs so am not surprised at how he felt. Shouldn't diss Tom though, he had every right, and entitlement. Early adopter, just not holder.

BTC hodler are in profit since 2017 and now with current Bullrun, BTC hodler has gain profit beyond the expectation and predictions show its magic. These BTC hike scenarios, one more time put forth its powerful existence in the global economy.