Instead of asking yourself who am I? ask, "who am I becoming?"  

Are you becoming a better version of yourself? Are you on the path of self-betterment or spiraling down a dangerous road? Are you becoming someone you can be proud of?  

Again, it's not about who you currently are — instead, ask yourself who are you becoming.  

I have a post it note in my bedroom above my full body length mirror, and so everyday when I look at myself, I glance up and am reminded of the question, "who am I becoming?" 

And if in my heart of hearts I feel genuinely excited and happy for the person I am becoming, I give myself a nod of recognition that I am on the right path.