It is true that there is no guarantee that we will see these numbers, but based on the habits that occur in bitcoin, we always see bitcoin will touch a new ATH in every annual $ cycle, but there is something different in this cycle, bitcoin has touched ATH $ 73K before bitcoin halving. So we should have a realistic target, if I personally target to sell my bitcoin at 4100K.
Basically, there is no one who really can know the price of Bitcoin in the future. However, those who are the expert in crypto, can do certain analysis or research to predict the possibility of Bitcoin price in the future. No doubt Bitcoin always reaches a new ATH in every bullrun season, Bitcoin already hit a new ATH in March 14, 2024. The new ATH was $73,750 but people believe the price will increase higher in the next year. Many people predict the price will be $100k or above.
What you want to sell at 4100? Is 4k?

I'm not sure what price do you mean. It is 4k, 41k, or 410k.