Well, congrats for making 600k in crypto. Not all traders are as lucky as you. But what exactly do you mean by "quit"? Exiting crypto or losing hold on those assets that you mentioned? If what you mean is exiting crypto, I suggest, take it out of your options. As long as you are doing good at it and it's beneficial to you, why would you quit? Nobody's calling you to quit, anyway! But if what you mean by that is losing hold on those assets to invest in another, well, set a target price for selling and learn to suppress your greed whenever it exceeds your target. Sell into rallies and be contented with the profit you've made.