One of the most basic pieces of advice given to people is to be true to yourself.
However, this simply piece of advice doesn’t give any hint as to how to apply it if one finds themselves changing over time. Should that person remain true to themselves in a way to prevent any change? If they’ve changed, should they be true to how they were, or how they are now. What if they don’t like how they are, should they still act true to that nature? Or should they be true to themselves as they wish they could be in the future?
Nothing is ever easy, particularly when “truth” is involved.