All of us would really be having those kind of doubts in their minds where we dont know on where prices can possibly end up.If we do saw that we are already profiting
then we have those thoughts that we should really cash it out instead of getting those profits back into negatives when the price tend to revert or go to the opposite side.
If you do come into this market and have that only one goal is go HODL! then you wont really be bothered on these things.You would hold no matter what and what price
you had bought your coins.You do aim for more years to come and wait for that significant target that you've been or all of us waiting.

That's why being a holder is a mental game, you really need to be tough as nail because for sure those ideas are going to pop in your mind. So psychologically, it will be a battle inside of you. But you are going to overcome it eventually. You will just have to think of the long term scenario. Just think of how many early bag holders have regrets selling their bitcoin prematurely, specially seeing two bull runs. So there could be more bull runs to come. So look for the long haul.

Yes, definitely it's normal for us to think about different scenarios in our mind, specially if you are about to sleep, that's why there are people who says that crypto is dangerous to our health, Lol. Other's though just eat, sleep and trade.

But I would say it is normal though, every investments not just in crypto will give this kind of effect. It's really up to you, how you responds with this kind of mind tricks. If you are weak then and emotionally then definitely you might push the sell button the moment you see your profits going down. But your scenario though of bitcoin going to 0 is slim, so you have nothing to worry about.

It's been hell for 9 years.  It doesn't get any better.

Then, this one happens too...

Oh my, my dog has fallen ill.  I need $500 to pay the vet, and I just don't have it in my bank account right now.  Oh! I've got a Bitcoin and it's worth $500!  I'll sell the Bitcoin and pay the vet, then I'll buy back the Bitcoin over time instead of paying interest on a credit card.  Brilliant!

1 year later...

Bitcoin price has been going up faster than I can buy it back.  I've spent $1500 trying to buy back that 1 Bitcoin, and so far I've only managed to buy back 0.1 Bitcoin.  Bitcoin is currently worth $20,000 per bitcoin?! So my $1500 spent has grown by $500 to $2000 in value, but that means (compared to if I had just skipped the treatment and euthanized the dog) that dog cost me $19,000!?!?!

Comparison:

• Use bitcoin to pay vet, spend $1500 to buy back 0.1 bitcon, bitcoin value grows $500 to $2000 in bitcoin value. Result = 1 dog + $500 growth
• Euthanize dog, keep $500 bitcoin, bitcoin grows $19,500 to $20,000. Result = 0 dogs + $19,500 growth
• $19,500 - $500 = value of dog ($19,000)

That's one expensive dog!

Now everytime I spend ANYTHING, I have to stop and think...  Well, if I bought bitcoin with that money INSTEAD of whatever I'm about to spend it on, and Bitcoin increases 100X in the next few years, then I'll effectively have spent 100X as much for that thing I was about to spend money on (since I could have had that bitcoin growth instead of that thing).  Is that thing worth (a few years from now) 100X the amount I'm about to spend on it?

Buying a $5 cup of coffee?  You could have bought $5 worth of bitcoin that might grow to $500!  Is that coffee really worth $500?
Buying a used car for $1500?  You could have bought $1500 worth of bitcoin that might grow to $150,000! Is that broken down old car really worth $150,000?

When your mind keeps playing games on you like this is when you worry constantly that the price will go down to "zero". That alone can make your heart race, especially if you buy Bitcoin when the price is way higher.

When you hear people say that bitcoin investment is not for the soft-hearted; they were not kidding. Just for your mental stability, have a long term goal for it and be ready to ignore all the noise when prices are dumping.

I've been with the same mindset when I was still new and on 2018. Thinking that it can go to zero was due to those predictions and negative thoughts of the community. You'll absorb those if you keep reading negative insights about the market and so I did avoided them and whenever I knew it that they're explaining their negative thought about bitcoin's market, I'll skip it immediately. But needless to say, bitcoin is here to stay and it's probably just the beginning of another great run.

That's absolutely imposible if others would think about bitcoin become undervalued, because this time it became the core of all cryptocurrencies. Becoming smart enough to handle your asset at times of fluctuations is the most certain actions to do,  and once there's an opportunity to earn once it gained enough profit don't be hesitant to decide. Price would always change while market volatility occurs, particular during corrections.

I am thinking the same way as yours, that is what a beginner would think, everyone is afraid of losing of money o they always think whether it is time to pull out the money or not but with the advice that I have heard from many experts I can say that investment and hodling would be the best thing to for now.

Always had those thoughts in my first year with bitcoin. And almost like 90% of the time? Selling ended up being a really BAD decision because I could've had more money if only I waited longer. Hence why today, I sell bitcoin ONLY when really really necessary; pretty much only when I'm in dire need of money.

Regular investors and traders are already used to it. Taking out your stake is what you should do and leave the rest to be used for holding and trading purposes. You will have a free open mind to do other things without any thought of Capital loss.