You cannot control other people to buy bitcoins. Its their own decision not yours. For me it's always the best time to buy bitcoins because I believe it will increase more if I buy now. I remembered those people who were asking that was it the right time to buy bitcoin when bitcoin price was at $10000. So if that people bought bitcoin that time they already have profit now. Same as now, don't mind the price of bitcoin just believe that you'll going to have more profit.