Worrying for Newbie

$Canaan is the first few stocks i bought for crypto mining sector. Bought it at 21, and saw it grown to 25 before dipping to around 19. Now there seems to have a recovery. As a newbie, i have paper gain when it rise to 25. And paper loss when it drop to 19. Now again paper gain at ard 31. Although the number of CAN stocks i have is very little for a newbie, i keep pondering if its time to cash in and earn the small profit. The price may drop back, and i suffer heartache. Or it head up after i sold, also heartache. Any opinions and tips for a newbie like me.?

Thank you.