But inside, what they are actually hoping for is for you to tell them, "No, you are a very capable person."
ご質問ありがとうございます。
"Often, there are people who criticize themselves."=「自己卑下をする人がよくいます。」
"But inside, what they are actually hoping for is for you to tell them,"=「でも、彼らが心の中で期待しているのは、あなたが~と言うことです」
" 'No, you are a very capable person.' "=「いいえ、あなたはとてもできる人です。」
ご参考までに。