Pretty sure I also have a significant amount of Bitcoin that passed through my wallet as i'm not a fan of holding before, when I was just starting. Everytime I buy, it doesn't take too long for me to sell my Bitcoin. It's just come and go (as I never expected this is something that I will regret later on) until I learned the importance of holding. Well, as others have said already, even many of us have similar experience, it's not yet late to buy Bitcoin and hold. There's no such thing as too late if your plan is to hold for long period. Thus, timing when to buy and be firm to hold because it is proven as an effective strategy to profit in Bitcoin. But one should have a long patience.
That's the influence of our inexperience. I also experienced it. especially when we hold Bitcoin when the market is rising. it quite easily influences us to sell and wait for a dip to buy again.
There is nothing wrong with this method, but when the price of Bitcoin reaches this point, you are right, all that remains is regret for not holding Bitcoin for greater profits. instead of being persuaded to sell at a small profit.
Now I also still collect Bitcoin when the price declines like a few moments ago. The market has been moving quite fluctuating lately. and we have to make the right decision to buy.