I see myself as way bigger than I am

I think I must have body dysmorphia because every time I'm getting out of the car door when next to another car I keep thinking I won't fit but I do.

Same as when I look at myself in the mirror. I don't hate how I look I just seem to be tripping out on some areas of my body and see them as soo big.

I'm curvy and like 1-2 bmi overweight but I see myself as like 50kg over. How do I stop tripping when looking at my own body?