My advice is to continue to learn about bitcoin(other cryptos apply too) until you begin to grow in belief and knowledge. Increasing these two allows you to create a better picture of what you think bitcoin is worth, and allows yourself to withstand price variations.
What's your advice? Is it keep holding? What if keep holding means holding at a loss?
Simply relying on trading will lead you to the situations of FOMO and anxiety like the one you described. We have all been there.
There is no shame in experiencing these lessons. Continue to get better in your approach and the profits will naturally swell to you.