March 2020 Crypto Crash
I will not specify any coin because on that month, I didn't have any spare cash and the only thing that I'm doing at that time is to just watch the market falling down. Yes my current portfolio at that time is falling as well but I'm more bothered to the fact that I didn't have any spare cash to be used to buy some coins because that is a perfect opportunity to buy. Buying at any price at that time and selling it after 1 year will give you a huge profit already.
I've said that numerous time that it is the biggest missed opportunity for me in crypto and I learned from it that's why I'm still holding cash right now while accumulating more cryptocurrencies and not only Bitcoin.
For sure, there are some investors out there that has the same experience as mine so what I'll say is to just Dollar-Cost Average

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when we believe and we don't have the funds to collect it may be silent seeing market opportunities is a best choice than forcing ourselves to take a loan in order to buy is the most misleading thing because it is too high a risk that we will get when our beliefs are wrong