There is no certainty that long-term investment will be successful. But compared to short-term investment, the risk in long-term investment is much less. In the case of long-term investment, you do not need to worry about small declines. Remember one thing, Bitcoin is very volatile. If the market dumps, it will pump, or if the market rises, it will dump. This can be for a short time or for a long time. So you do not have to worry much about long-term investment. Because you will invest, keep your investment period for 2 to 3 circles.
It is true that you can never be guaranteed with your investment. In the case of long-term investment, the risk is low and the chances of success in the investment are high, but it is not guaranteed. When you are planning for the long term, you do not need to worry about the volatility of the market. Because volatility is normal in the Bitcoin market. In a volatile market, the price always moves and the market sometimes looks green or sometimes looks red. But if you are a long-term investor, the market is most likely to be green for you. Because the price in 8-12 years will be much higher than today's price, which is why you will see green candles in every cycle.
But if you look at the short-term candles, you will see red sometimes and green sometimes. Never panic and sell Bitcoin when you see red candles, because red candles are temporary which eventually turn green. Learn to use both red and green candles correctly and keep buying both.
Have you sat one day and have the confidence of saying Bitcoin doesn't have any risk? I have full confidence and don't think the risk side of Bitcoin and you know why? Because whenever I look at Billions of worth of usd are been used to purchase Bitcoin, then what is my amount going to do because it's just a drop of water in the ocean if I compare it with the amount people are investing, that should give anyone confidence that Bitcoin is here to stay. Nobody has money to waste, they are here for the long term and as long as they keep buying, I will do the same.
I might be delusional to have high expectations in Bitcoin, I have always have it's in mind that Bitcoin will go up and it doesn't fail me. The short term lapses are normal, when the time is right, it will surely comes to an end and we are going to see Bitcoin continue on the same pattern again. So calling Bitcoin risk or no risk, you don't have to worry about that, buy the amount you can and hold and you let the market do what's it's non for but saying little or that, it will only create another form fear and lack of confidence in Bitcoin.