It is normal to have fear and worry about the investment made with Bitcoin.  I agree with @OP that to quell that fear, one must strive to learn and acquire knowledge about the venture he is investing with or trading with. 

Knowledge is the best solution for fear since fear is caused by worries about unknown circumstances and having knowledge about Bitcoin trading, the cycles, and the patter of the Bitcoin market will assure us of something in the future.  So learning these knowledge will make us diminish the fears and worries and we will have peace of mind holding our BTC and be ing patient to wait for the future great opportunity to profit.