Emotions emotions emotions! Impossible to get rid of them... maximum you can do is to learn to control them. Sometime I make the same mistake even though i'm not a novice trader. But i'm still working on myself 
My advice (what's working for me).... write your set of trading rules on a piece of paper and stick it somewhere in front of you!!! Sounds stupid, but works. At a minimum you should three things.
1. where you will fix your profit (i'd say the profit potential should be at least twice as big as the loss you are willing to tolerate).
2. where you will fix your loss (do not less losses run).
3. reason for entering a trade (make sure the reason is not an emotional factor).
... and stick to your piece of paper!!!
When you have experience more than one year then this emotion kind of thing dont bother investor and still you are new thats why you are facing these panicking problem and soon as you will become more confident this habit will leave you just stick to your strategy and have faith in bitcoin that it will not let you down and all the dreams will come true and try to buy at low and sell at high this will give you more profit. My advice (what's working for me).... write your set of trading rules on a piece of paper and stick it somewhere in front of you!!! Sounds stupid, but works. At a minimum you should three things.
1. where you will fix your profit (i'd say the profit potential should be at least twice as big as the loss you are willing to tolerate).
2. where you will fix your loss (do not less losses run).
3. reason for entering a trade (make sure the reason is not an emotional factor).
... and stick to your piece of paper!!!