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.