The present moment is the only guarantee

You can't know what's coming. For all you know it's a setup: something good handed to you now so it can be used against you later. Good times and bad times are both on their way regardless.

The only thing you actually control is the present moment. So it's the only part of your life you can guarantee is good.

Take the worst case, some hope-based torture simulation where they feed you hope just to watch it crumble. Even there, a present moment lived well is untouchable.

So the job is simple. At every step, choose the option with the best odds. The best odds of fun, of love, of happiness, of legacy, of whatever you want.

That's the one point of goodness in a life you fully own.