how important the thesis is?

on my essay i dont have a specific sentence as thesis but i almost repeat what i have said in instruction at the conclusion... how much does it matter?

thanks.

You might want to connect the introduction a bit more strongly to the body of the essay, possibly by revising the first body paragraph rather than the introduction itself. The lack of an explicit thesis in the first paragraph isn't a particular weakness in this case, though.

It's good that at the end of your thesis you reflect on your main topic, that's what you're supposed to do. The thesis statement is the soul of the essay! You should always be able to tell what the main idea of an essay is. In your case, it is the experience of listening to others. You can still write about your move to America, but write about it in terms of the thesis idea, which is that you have crossed cultural and interpersonal barriers by being a good listener.