I'm on a diet.

What does “I'm on a diet” mean?

I'm eating less, or only certain foods, because I'm trying to lose weight.

• On the count of three./ɑːn ðə kaʊnt əv θriː/
• There's no precedent./ðerz noʊ ˈpresɪdənt/
• What's on your mind?/wʌts ɑːn jʊr maɪnd/
• Time will tell./taɪm wɪl tel/
• You are good enough!/juː ɑːr ɡʊd ɪˈnʌf/
• Text me./tekst miː/
• Pinky swear./ˈpɪŋki swer/
• I'm so proud of you./aɪm soʊ praʊd əv juː/