The halving is a controlled process in bitcoin, we know in what year and more or less we know the exact date as well, so there is nothing to fear, in fact each halving is a motive of celebration since it means less coins are available and after some time bitcoin reevaluates itself due to the decreased supply, your best bet is to buy your bitcoin way before the halving when there are some dips so you can obtain the most profits out of your investment.