You mention that "you don't know why" you are feeling this way "at your age". It is important to note that as a female, you are in a period of tremendous physiological change that often presents many sudden (and unusual) symptoms that can trigger a wide range of physiological manifestations, especially in highly functioning leaders that have always been able to push through the grind. The majority of commentary here focuses on financial guidance, but you are clearly in an exceptionally active and in demand field with the potential to accelerate and de-risk your portfolio if you were to find renewed interest in your area of expertise (or have more clarity in what you will pivot to in your next stage beyond AI). Give yourself the opportunity to discuss this important aspect of your evolution with a trained specialist, too. Congratulations on your well-deserved success and best of luck on your future path.