Always have an exit strategy. Maybe you can stand to lose 20% before you sell and try to reevaluate where the market is heading. And vice versa if you can feel good about selling a coin that has gone up 3x, maybe leave some coins to see if it rises further, but being ok if you sold at 3x an then later it goes to 10x. There's no need to be so zealous about coin investment. Just know where you're comfortable getting out on both sides.