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. I always follow the strategy to sell my Bitcoins when they reach a 'set' profit margin. Too much waiting can mean greed and then the decision making abilities are hampered by it. I would suggest to set a fixed 'profit margin' (within reasonable limits of course) and sell when the price touches that floor.
In current situation best policy is if you have good profit then sell and as you look reasonable price then buy back because holding long time for profit is not good