It's nearly impossible to increase your self-awareness if you're unwilling to take an honest look at yourself. A lot of people stumble on this point because they think that it means tearing themselves down or making themselves feel worse. In actuality, taking a look at yourself is the process of discovering who you are. It means finding out what you do well and what needs some attention.
It's only through careful and thoughtful examination of your thoughts and behaviors that you'll be able to decide where you want to go. Taking a look at yourself means you're willing to work on the things that will make you more effective.