Cos there ain't no self. There ain't no ego. There ain't no centre.
You can't be aware of, realise or enquire into something that doesn't exist.
Self and ego are thoughts.
Always only living. Not being done by a you, a them, a they, an it.
G'wan. Have a look.
You. Yes, you!
Stop dicking around trying to be self-aware or self-realised and for feck's sake stop trying to enquire into something that is non-existent. Take the short cut. And just see that this 'thing' that is labelled self is just that: a label. A there-and-gone thought that's based on absolutely nothing.
That's it. Easy-peasy lemon-squeezy.
Use a bit of oxyclean looking to see the oxymorons for what they are.
And then you'll see that you're already free!