now a lot of investors are investing in bitcoin, therefore bitcoin has increased very rapidly, if bitcoin decreased what should be done?, whether the investors will lose? 
Just sra calm dont panic and yes it is kind of alarming because you are lossing money but you need to stay put and do not sell your coins yet because you are just gonna make that coin much worst the bitcoins might fall much more if you panic sell and you will lose that money forever. We all kkow that when bitcoins falls bitcoins will rise again so just trust it and have a little bit of patience and all will go right again.