Structure is better than willpower.

The most optimal long-term structure and state are always the most effortless and comfortable.
"Persistence" on the surface relies on willpower, but in reality, it depends on the structure.
If a relationship requires frequent explanations of right and wrong, it is inherently exhausting.
If a job requires you to "snap out of it" every day, the structure may be wrong.
If an investment causes daily stress, the structure is likely incorrect.
The more a structure continuously consumes your energy, the harder it is to sustain long-term.
Things that can last over time are often very "quiet."
They just operate with low friction.
For example, why is dollar-cost averaging into an index the best? Because it’s the most worry-free and effortless, allowing you to spend time on leisure and entertainment, and ultimately, you earn the most money.
In love, if you and your partner immediately face insurmountable obstacles, with the sky falling and the earth splitting, sudden thunderstorms and lightning, daily soap operas and tragic dramas, it’s better to break up early for safety’s sake—long-term happiness is unlikely.