After searching, I found this topic on Bitcoin holding related in the Trading Discussion section. I spent some time reading many posts. Where most of them are advising to buy Bitcoin and hold it for a long time. I recently installed the exchanger and set it up. So yesterday I decided to buy some Bitcoin for the equivalent of $240. So today when I entered the exchange, I noticed that the price of Bitcoin has dropped further. If it continues to drop like this, it is not known when it will increase. In that case, I am a little uncertain whether it is better to buy Bitcoin now or wait a little longer and buy when the price starts increasing, then I can make more profit?
Also I have some questions, how do those who have been holding Bitcoin for a long time actually keep their mentality stable when the price drops? Where I am a little afraid before buying Bitcoin

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And if I buy Bitcoin and hold the price is likely to increase. If I buy Bitcoin now, how long will it take for my fund to become 30% profitable?
welcome mate.
You’re already doing good taking a good step,you actually bought. Most people stay stuck in the should I wait? loop forever.
On buying now vs waiting for the bounce,Don’t wait for the green candles. That $240 you put in yesterday is already working for you. If you have mory discrietionary income with time, just buy more. Trying to catch the exact bottom or only buy when it’s going up is how people end up buying higher later. Price can keep dropping for weeks or reverse tomorrow, nobody knows. Just keep adding when you can.
How long-term holders stay calm when it drops is that they stopped looking at the daily price years ago. Seriously. Most of long term holders check the chart way less than we used to. The ones who survive every cycle just treat Bitcoin like a long-term savings account, not a lottery ticket. When it drops they either do nothing or buy a little more if they have a discretionary income available. Fear is normal at the beginning, it fades the longer you hold through a couple of big swings.
Finally there is No honest answer to how long until +30%. Could be 3 weeks, could be 8 months, could be longer. Bitcoin doesn’t run on a schedule. Anyone giving you a confident timeline is guessing. The only real plan is to keep stacking when you can and forget the short-term %. You are early in this Keep it simple,buy what you can afford to hold for years, ignore the daily noise, and don’t stress the dips. You’re already ahead of 90% of people just by having some sats.