The lesson which i learn in bear market is how to buy more reliable coins, i have miss buy low and sell high time which mean i have learn my lesson.
What I learned the most from the market is that I should not be greedy and should preserve my assets as much as possible. Because then you can do everything to earn profit later
It's a good lesson to be learned. I also found out that flat on bear market is a good time to invest in projects. It will give a good profit when market trend will change.