Do not understand your question about retirement when you indicate that what you want is a sabbatical. There is a significant difference. It is important for pe

Do not understand your question about retirement when you indicate that what you want is a sabbatical. There is a significant difference. It is important for people in the engineering space to write stuff that is not ambiguous. If you feel "burnt out", take a sabbatical while still doing stuff that keeps you connected to your profession. Assuming no health issues, you are too young to retire and may not have adequate assets to retire at less than 40 if you intend to remain in California in particular, and the USA in general.