I just hold, everytime I tried to play the market I lost some coins.
Investment or buying and selling into the crypto currency trading market need a lot of research before the final decision is made, the fundamental, stability on the market treed, the price value of Bitcoin as posted, and the amount of investment for such project. Investment for Bitcoin project is always an individual decision to make, good luck guys.
The ones who are there in the crypto market since ling and that they have some good experience, they only say one thing and that is go for buying of the crypto coins when everyone else is going for selling of the coins and that the market is very low. Most of the investors find it difficult to understand this idea in the start but then they get to know that this is the right thing to do.