The truth is, I didn't like who I was when I was with him. I would turn into this horrible person.

9 seconds sound clip from the Mrs. Doubtfire movie soundboard.

You can hear this line at 01:16:16 in the Blu-ray version of the movie.

Quote context

[...]

- Daniel was so wonderfully different and funny. He could always make me laugh.

- They always say the key to a solid marriage is laughter.

- But after a few years, everything just stopped being funny.

- Why?

- I was working all the time and he was always between jobs.

- I hardly ever got to see the kids, and on the nights I would try to get home early to be with them, something would go wrong. The house would be wrecked, and I'd have to clean it up.

- He never knew, but so many nights, I just cried myself to sleep.

- Really?

- The truth is, I didn't like who I was when I was with him. I would turn into this horrible person.

- I didn't want my kids growing up with a mother like that.

- When I'm not with Daniel, I'm better. And... I'm sure he's better when he's not with me.

- Well, you never... I mean, did you ever say anything to him, dear?

- Daniel never liked to talk about anything serious. I used to think Daniel could do anything, except be serious.

[...]