More literal translations:
* "Je me sens fou" (I feel crazy) - This highlights the feeling of losing your sanity.
* "J'ai perdu la tête" (I lost my head) - This is more metaphorical and emphasizes a lack of rationality.
* "Je suis à bout" (I'm at the end of my rope) - This conveys a feeling of being overwhelmed and losing control.
More nuanced expressions:
* "Je me sens déséquilibré" (I feel unbalanced) - This emphasizes the feeling of instability.
* "J'ai besoin de retrouver mon calme" (I need to regain my composure) - This focuses on the desire to return to a more balanced state.
* "Je suis épuisé mentalement" (I'm mentally exhausted) - This highlights the mental fatigue that can lead to feeling like you're losing your sanity.
The best translation will depend on the specific context and the exact feeling you want to convey.