Is it necessary to consciously identify & change our core beliefs, so we can change our outer world? (i feel it is) or is it just as simple as detach from mind & all gets sorted?

This question was asked at our Kitchen Table the other day...  I LOVE questions like this....

Hi all, over the years, I have been using various ways to identify & change my beliefs to more empowering ones (as well as embracing & integrating emotions) ~ to good effect. Recently came across Teal Swan's methods on how to identify & change beliefs (and other stuff), which resonate with me & seem to work! That said always open to new ways & quicker ways  lol 
Am curious folks....Eckhart Tolle who I also respect as a spiritual teacher, does not seem to address core beliefs (correct me if I'm mistaken)..as we all know, he is a great advocate of detaching from mind & observing our thoughts & feeling our painbodies without analysing or adding stories to our feelings. I have also tried his methods, felt peaceful, but not noticed changes in my outer world. 
Is it necessary to consciously identify & change our core beliefs, so we can change our outer world? (i feel it is) or is it just as simple as detach from mind & all gets sorted? Any thoughts, opinions, intuitive responses??? 
Love S 

​Here's my response...

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