Mindfulness involves noticing, without self-criticism or judgment, the bodily sensations, thoughts, and emotions that are coming up. Check here some ways to avoid overthinking: https://mind-globe.com/ways-lessen-runaway-thoughts/
As much as I want it, I cannot do it. Even if I tried. Nomed would only torment me in my dreams for being so weak as to cry over you when I know I am never going to see you or hear from you again. You abandoned me, and Nomed will never let me forget it.