a very classic words, buy cheap and sell high, I think it can not be identified with bitcoin alone, a natural thing in life. almost in every business we have, we always imagine a higher return from the capital we have. however, it is not easy. not everything we imagine come true, all through a long process.
one of the economic references, that buy when prices fall and start selling when you feel that you are getting a reasonable profit. of course this will be done by all components of society in trading, including in the field of crypto. bitcoin has now reached a high enough price but it is not maximal and the possibility of falling back could occur, don't hesitate to buy and invest because bitcoin will reach its peak next year.
This can be applied if you have a huge amount of money you can sacrifice with this kind of method. As of the moment, it is hard to indicate whether the time is right to buy bitcoins or not. we still have no idea until when the market will continue to increase its price or it will stop at any moment. but when the price of bitcoin will go dip again, that's when the time all those people who are waiting for the right timing to buy will flockto get their share with bitcoins.