Sounds like a solid hypothesis‑testing plan. Just be sure you separate correlation from causation; a spike in cortisol could be a consequence, not a predictor. If you want a model, start with a clear operational definition of “self‑sabotage” and gather a large, diverse dataset. Then run a regression or machine learning pipeline, but keep an eye on overfitting. Good luck, and remember: even the best model can miss the human element.