as with any speculative market, the precise timing is somewhat difficult to identify, given the multiple factors involved, in determining when the price on that market will rise or fall. Having said that, it is possible to achieve this and make good profits.
It is up to us when is the best to invest, we should make sure that we are mentally ready and emotionally ready in everything, we should not go to a race when we saw other people are cramming just to invest in bitcoin, we should not enter to a decision because of peer pressure, the first thing that we should do is to analyze why some people are getting crazy about it.