Selling Bitcoin is a very unwise choice. I think Bitcoin is the most worthwhile to buy and save. The job I am doing is to prepare for the purchase of Bitcoin!
It depends upon the need of a person. When you need money for your financial problem and the only source of money is bitcoin then you should sell your coins because the aim of bitcoin investment is to overcome your financial problems but without any reason selling bitcoin for low price is not sensible decision, because you will lose your money.