Can you start a sentence with the word my?

Yes, you can start a sentence with the Word "my." Here are a few examples:

1. My favorite color is blue.

2. My dog always greets me at the door when I come home.

3. My goal for this year is to learn a new language.

4. My parents are coming to visit us next weekend.

5. My car broke down on the way to work this morning.

Starting a sentence with "my" is perfectly grammatical and common in everyday writing and speech.