Nothing is perfect so don't be afraid you got wrong in crypto especially in trading all of us experienced that feeling. The first you can do is research and study about crypto trading it's not easy but if you have patience you can do it. Second don't always panic if you see that the market is down always think what is the better you can do sell it but you don't have get anything or hold but you get big profit.  And lastly hold your emotions it comes in trading.