If you are in need of money for medication or any important matter then what's more important to you? Life or money? But if you're not in that type of situation, ask yourself if you need that money now and what makes you hurry to sell? Since you've mentioned to wait for the halving then we'd all say that it's the latter. The halving isn't there yet and all you need to wait is for it to happen and then let Bitcoin move on its own for the next several months to come up to next year. If you sell now, are you going to regret when you see the price of Bitcoin soars? For sure that you will because many of us did but the difference is about the usage of the profit and where you allocated that. If it's with a great purpose, no regrets and sell at any time you wish.