It is true and every trader should have a voice inside their head that says " You need to sell at least a portion of your portfolio". Don't overhold because prices fluctuates fast now so if you missed selling when a bull run happened then you missed a huge profit already.
I did learned huge lesson when it comes to taking profit because I am confident that the price would continue to go up and now, some of my coins are even worthless because they are worth 99% less than its value in its all-time high. This reminds me that whenever the price goes up, I should consider taking profit until such time when I got back my capital and then I would be confident that no matter what happen, I would have a profit because all that's left is profit.
You are just lack of time management. You are just too focused with your mining because it gives you earnings even if you are just studying. But the fact that your well-being was been controlled by crypto is not really a good thing. Crypto world doesn't separate you from real world. You, yourself has taken away all the reality because of crypto addiction.
Well, that's a lesson learned for you, bud. There is always a time allocation for everything. Manage it wisely, separate it properly.
OP is just too excited that he is earning that's why he forgot his should priorities and take a wrong turn because cryptocurrency market is not doing good nowadays. I have in this forum as well that someone almost lost his good-paying job because of being too focus in cryptocurrency. It's time to learn from his mistakes and focus in studying. He can still earn from crypto market anyway since mining is just passive income.