I have made plenty of mistakes when it comes to Bitcoin. Mistakes are part of life. I have learned mostly through my mistakes. If you are learning is it really a mistake?
The first time I took interest in Bitcoin(no pun intended) was around 2012. I was using it buy things. Goods and services traded for Bitcoin. This may be thought of as a mistake considering the growth of its value these last few years. When i first realized this myself I thought it was a grievous error in judgement. After a half-minute of kicking myself I reminded myself that Bitcoin was meant to be used exactly in this way. Its a currency not a piece of gold.
Maybe it is not so much about avoiding mistakes but learning from them.
Always making panic that would be one of top 5 reasons that bitcoin users are making, avoid this one so we can have a profit that we want. I also have made mistakes for the past months that I joined here and one of those is that I am always doing panic selling whenever I am seeing the price getting low.