Yes, predictions could go wrong. Listening to predictions is not bad. But the decisions will still be up to you. As long as you strongly believe in what you know, what other people's saying is nothing. We shouldn't trust all things we see and hear. Only trust our own judgment.
Yes that is right that we should listen to everyone prediction but should take a decision after good study of the market and after full satisfaction. My person opinion is that the current time is the best time for investment because bitcoin price is still low but it will now trade in such a low price for a long time. Therefore we should invest money in bitcoin right now.