Of course I will never regret and lose my faith in bitcoin. Bitcoin are still young and starting to introduce it's price also showing bitcoin force in just to early. Every year bitcoin price are getting higher and higher. Expect that it will exist for long term.
There is not really a reason to lose your faith at all, however it is very unlikely that we are going to see bitcoin getting a new higher price, so this year is going to be very difficult since many people will in fact lose their faith in bitcoin and will sell for a very bad price.