We have no option but to sell because it is where most likely our savings is in and as long as it is in profit, we still feel the regret that we have to let go with our holdings because we don't know if we'll be able to take it back at the same amount.
Just think that you've used the profit in good purpose and that's already a great deal to you after holding it for a quick or long period of time. That's the best consolation that one will get by thinking that you've got the best deal ever with your money through investing in bitcoin and upon selling it in profit, you'll use it for that important thing you want to purchase.
Might selling not at the perfect price is disappointing but I don't think it is a failure but kinda be a test of how we respond to the situation, especially when we are following the plan. This would tell us that not all can manage to hold and if they broke their plan, I believe there is a valid reason why it happens - emotional or emergency.