There was a tweet from a Twitter user who regretted selling his Bitcoin too early.
It looks like you're a bit late with this tweet (back then, Twitter was actually called Twitter).

This story has already been discussed many times.
And perhaps he is one of the Bitcoin OG’s who once traded Bitcoin at a very low price.
Of course, because that was in 2011.
Greg Schoen is someone who has said that he wishes he still held onto the several thousand Bitcoin he once owned.
By now, anyone who held bitcoins in the early stages (knowing the current price) would love to have kept them.

But he can only lament his mistake for selling them too soon, where at the time he regretted selling his Bitcoin at $0.30. And he regretted it because Bitcoin subsequently rose to $8 per coin.
That missed $8 price isn't the only thing he’s had to regret all these years.

I personally think he still feels regret today considering that Bitcoin now commands a truly fantastic price.
But regrets won't bring anything back.
And it seems he still can’t let it go given that he was still tweeting about it in 2022 even though he had turned that old tweet into an NFT sale by then.
Links wouldn't go amiss here (for the sake of a complete story).
The halving cycle is still a long way off. And around each halving period Bitcoin offers the potential for profit because Bitcoin is becoming increasingly scarce and even demand for it is increasing across various sectors. Just because Bitcoin’s price has dropped slightly doesn’t mean you should sell it right away. You just need to be patient so you won’t regret it later. If you manage to hold out for a long time then you’ll reap the rewards of your patience all this time. Do you still think you’ll sell your Bitcoin at a low price? And aren’t you convinced that Bitcoin’s price will be very profitable for you? Please share your thoughts as well.
To me (and, I imagine, to many here), the idea of selling bitcoin at a low price is utter foolishness.

No one in their right mind and facing no financial pressure would do that voluntarily. It is newcomers who need to be convinced of bitcoin's profitability. I have been observing what is happening with bitcoin for quite some time, so for me, no further convincing is needed. The facts I have seen are enough, and it can be summed up in one brief phrase: bitcoin is profitable (with the degree of profitability depending on the holder's patience).