I think in this context it's important to be specific about the type of self-doubt you're experiencing. Are you unsure about something specific you're stating? A decision you're making? A belief you have? A pattern of behavior you exhibit? Yourself/your life in general (literally, "unsure of yourself")? These are all separate things imo and warrant different levels of healthy doubt. Like, be open to being wrong about a fact, and be mindful of your behavior / willing to change it if it's hurting others, but no need to spend energy constantly doubting who you are or how you're living your life. Whenever I experience self-doubt, I try to first ask myself which of these categories it belongs to, and based on that I decide how I want to respond to it.

I hope this makes sense, it got rambly lol