It's a self-esteem problem. One easy thing you can do is not to express it too much. For example, avoid to be sorry about stuff you're not responsible for. Abo

It's a self-esteem problem. One easy thing you can do is not to express it too much. For example, avoid to be sorry about stuff you're not responsible for. About the "career", it's an HR meme. You're supposed to be the perfect guy who is never wrong and always healthy. Don't buy what the others say even if it's told by someone who is supposed to know (like someone on tv or a teacher). Make yourself an opinion on everything.