Good advice above. My own suggestion:
Be glad you can admit this, if only to yourself, as it shows the kind of self awareness often lacking!
You have broken the chain, you are the one who could have passed down a destructive message, and you didn't. There are no medals, no thanks, but you know.
So, when you quietly admit your sadness / jealousy to yourself, also celebrate the job you have done.
My own 'difficult message' was around being overweight. I remain overweight, and I won't go into boring details; but I have raised my children to eat healthily and enjoy their physical prowess. When we are together, I hold all those emotions - some jealousy that they can do what I cannot, some sadness that I cannot take the pleasure that they do, and I make sure as well that I feel some pride in breaking the destructive cycle.