If you are willing to hold your coins for the long term then it is almost irrelevant when you buy your coins, it is not going to make a huge difference in the future if you buy bitcoin for 6000 or 7000, but if what you're looking for is to get profits in the short term then it could be a good idea to wait a little bit because the price is going down right now and you do not want to buy until the price reaches the bottom.