Nothing lasts forever. Life is unstable and unpredictable, which is what makes it worth living. You're never going to be stuck anywhere forever.
And here's the really crazy thing: you can change, too. If there are things you don't like about yourself, you can change them. You can become a different person. You can change your routine, or learn to be more patient, or take time to smell the roses, or become more motivated and driven, or be more forgiving of others, or go vegan, or learn French, or even just learn French cooking. Nothing is certain except death and taxes, and even there you have room to cheat.
Nothing is forever.