If you look on an iPhone width screen (or use Chrome and inspect with the device set to iPhone 6) there are several lines of text that appear to be wrapping too early. It starts in the heading with “teenagers” and then in the first sentence of the first body text paragraph the same thing with “psychology”, then again with “overcome” and there are several other examples throughout other paragraphs. The most obvious example is the word “of” in the first paragraph after the first set of bullets.
One way this can happen is if you copied from another source (web page, word document etc..) that had the nbsps. When pasting, I typically like to paste into the “Text” tab which strips all HTML, then you can re-format using the WordPress controls.