Living in the end just means responding to your reality ike you already have it i.e.
Not hanging on to the fact they haven't called
Not freaking out if you haven’t heard from them
Not allowing your mind to go anywhere else besides your own reality should there be a third party
Not putting them on a pedestal
Think back to when you started dating - none of these things would be a huge deal. You were still happy& fine to see how things unfold
Etcetc
The best way to do this really is to really at peace with your life& yourself.
Higher vibes means its easier to think more positively but really it’s your beliefs that matter.
All you have to do is believe he will be back& know this to be true..... &get on with your life. Happy or sad if you believe with all your heart - it is yours.