Here is the thing nobody tells you about amor fati. It's not a philosophy you adopt with your mind. It's a practice you install through repetition.
You don't wake up one day and genuinely love every hard thing that's happening to you. That's not how the subconscious works. The subconscious changes through patterns, not decisions. Every time you catch your resistance and choose to look for the lesson anyway, you lay down one more track in the brain that says: adversity is usable.
Marcus Aurelius wrote in his journal every day. Not because he was naturally calm. Because he was training himself to be. He was doing the reps. The Meditations are literally a subconscious rewire in book form, written to himself, practiced out loud through ink.
You can do the same thing. You don't need a leather journal or a Roman title. You need the willingness to look at what's happening in your life, without flinching, and ask: where is the usefulness in this?
The traffic jam teaches patience. The business failure teaches what your plan was missing. The hard season teaches you that you're harder than you thought.
Nothing is wasted on a Builder who's paying attention.