After a year, a lot of lessons that we did learn. There are 2 precious things that I think I should remember:
+ Fear
+ Greed
I learned that from my teacher, he said when you buy Bitcoin at 10k, it's then $12k your greed rises inside you and you don't want to take profit and expect more. Then, the downtrend is coming, BTC goes down to $8k, you'll be scared to cut loss, and what'll happen, you lose more while BTC drops to $4k.
So, we need to set up your expected profit point as well as the stoploss point.
How about you, what is your lesson?
I also have a failure like you but having one thing made me lose a lot of money, that is subjectivity. I bought a lot of Paragon and always thought that it would not get down quickly. so I did not set a stop-loss order as well as a sell order at a high price. I thought it would take a long time to raise the price, but in just one day, its value increased by more than 6000% and I didn't sell it at that time. It was really an unforgettable experience for me.
Let's always focus and work out a detailed plan to avoid bad cases.