The thing is, we can all invest everything we have but if we get hit by a bus tomorrow it was all for nought.
Holidays are very important and in a way they are an investment in ourselves and out mental health. Of course its easier to not take a holiday when you live on a beautiful holiday island but you do need to take a break.
Everything in moderation and never lay all your eggs in one basket.
You are still young, life is there to be enjoyed in the NOW also.
Take care of yourself and keep showing the donut shop your love ;-)