Nobody wants to be monitoring the prices all day with the cursor on the sell button just waiting to click the mouse, so how do you decide when to sell?
If you set up an open order with a low target price, you'll be disappointed when the price climbs well above your target price.
If you set up an open order with too high a price, you might not sell at all.
What's your strategy?
In my case, I have an application called blockfolio where you can see the market table via your phone and we know that phone is very convenient that wherever place you are you can still access it. Here, you could set the price of your coins that you want to sell at your preferred value then it will notify you if it reach the price you've set. The other way is, you could set your cryptocoins at exchange and wait until someone else buys it.