The crypto market especially altcoins can make you rich very fast but it can also make you poor real quick. Last year I started to became more contented and realistic that 10% above is already a very good profit. I only hold few long term coins now like bitcoin and ethereum.
Getting some profits, 10% for example, is already good and most of the time I will sell my coins whenever I got such profit. And then I will wait for some time to start buying again, especially when prices move down.