You do not have to stop being a dentist to become a philosopher. You do not have to stop being a philosopher to become a successful businessman. You do not have to abandon spirituality to care about your body. But you must stop allowing these parts of yourself to compete chaotically for your attention.
Make your health the foundation, your dental practice the principal professional mission, your attention the discipline that protects both, and your philosophy the wisdom that governs how you live.
And keep your family close enough to share the fruits of that effort.
One final thought: do not make a resolution to become a completely different man by your 61st birthday.
Make a resolution to become a more disciplined, healthier and more fully realised version of the man you already are.
Your sixtieth year should not be a year of more promises. It should be the year your promises begin producing visible result