i think so risky if you Holding bitcoin a long time , may be just 3-6 Month it's good . but , if you already got cheap or profit you should sell your bitcoin , and waiting dump again .
I agree, because if holding bitcoin for too long will be risky and you should have a target or can predict the bitcoin price situation because we will not know the future even though it has been expected to always go up but what's wrong to always be vigilant. sell on target and save not too long the most important selling when you think you can make a profit. but it all depends on his most important person wisely to act so as not to regret.