Favourite quotes...?

Every time I find myself wishing I had started a positive habit earlier, these words comfort me that, even at 51, I still have decades to reap the benefits of habits started today.

Maybe it’s one of those bits of wisdom that makes more sense the older you get, but that doesn’t stop me trying to help others to understand it much earlier than I did.

I couldn’t pick a favourite quote, or even a top 10, but if there is one which springs to mind most easily and quote most often because of its sheer wisdom, it would be this one. What would yours be… ?