When trading you have to be keep on watching the market situation and the fluctuations of the market.
When the price is high you have make your trade then you can gain the good income.
We also have to keep in mind that we have to put our money in the market when everyone will dump their coins. A time comes in the market when it starts to dump and reach to a bottom which brings a bright opportunity for the investors to gain the profit as after that the price immediately start to rise.