I bought bitcoin when it was around $14,500 in January and I am still holding because I am not discouraged. I have great hope that bitcoin is going to increase in price and volume in some years to come.
So you are in red by more than 50% right now? Don't get disheartened. There is a very good chance that the price will pickup within the next one to two years. The block reward halving can be the next trigger.
This opportunity must be grabbed, and I guess all of us who loves crypto will enjoy the future profit that we ever wanted. That dreams of being rich will soon be achieved. Always trust yourself and keep calm no matter what happens, be courageous and always stay stronger while holding your coins.