This seems like a very inconsistent method to such an important and, more-so, intrinsic part of life... I say that because it's hard to compare yourself to another person, recognize, and separate what you do and do not do from their behavior objectively because no matter how similar you are always dealing with a whole 'nother animal. The most solid tool I have found for not only self-awareness but most forms of self-development is meta-thinking. I understand that, at first, meta-thinking seems a little paranormal, but it's actually fairly simple and very enlightening once someone starts to make regular use of it.
To perform meta-thought, start by realizing that at the very least you are entirely contained to yourself, everything you've ever known, know now, and will ever know contained in your brain. "It's all in your head" is very literally and concretely true, and it's an important foundation to reigning in emotions about what you're experiencing. Then, realize that this applies to everyone, and what largely separates the emotionally/psychologically/intellectually functioning and capable from the dysfunctional is what is contained in your mind (i.e. all thoughts and perspectives on life may exist and be recognized, but are not equal, healthy, and ultimately beneficial).
Meta-thinking, then, is developing, altering, or even entirely removing what is within your mind based on a feedback loop. To meta-think, you must start by taking any thought in your mind, putting it into words as literally as possible, and then projecting exactly that onto an imaginary you.
Using the realization of the concrete separation of persons in the second paragraph, if you can imaginary this other you entirely separate from yourself and build their behavior from your own mind. The idea behind meta-thinking is that instead of the typical "inside only" relationship to self, you can have a relationship with yourself that nearly matches the level of objectivity you can have of another person's behavior. Once you form a judgement about this person (which is actually you) you can pull the projected thoughts back and use the outside/inside view to change your thinking for the better. It might seem complicated, but it's kind of like what you do when you would look in the mirror to check your appearance and make adjustments.