if someone disapproves of you how should you respond

1) Build up some self-esteem
2) Remember the person you think is disapproving of you has their own issues and might be feeling sensitive to what they imagine you're thinking
3) Even if they are disapproving, so what? Does their opinion actually matter in any practical way?
4) Respond with a smile and carry on as if they hadn't done anything.
5) You have no reason to doubt yourself as valuable: you are as worthy of respect as any other person, including from yourself.

What other people think of you is none of your business.
Once you love you enough not much can dent you.

You need to approve yourself then you won't feel like people are disapproving you. 🙂