Predict it perfectly? Lol. I doubt that anyone have the crystal ball and see the price movement in the future. To be fair not just in crypto but in other market as well. There are tools to help and one approach is what they call Technical Analysis (TA), and by using this method, traders uses pattern to make an 'educated guess'. But still, its not a guarantee that the predictions will be 100% accurate. So I don't believed that someone can accurately see the price in the future unless you are a time traveller  .