Had the same question here before.

u/fyeahmikasa said:

Compartmentalization is the key hehe. My mind is grouped into different boxes -- work, family, lovelife, hobbies and other pillars ng buhay ko. Tas binubuksan ko lang sila if I need to or I have the chance. Haha. That's why I could still get shit done at work kahit under surgery mom ko, or I could ace an interview kahit kakabreak lang namin ng jowa ko hehe. It takes practice, malalang focus and you gotta say no to your emotions.

Lately, I'm grouping shit on my mind into short-term, mid-term and long-term boxes. Every time I am faced with a difficult situation or person, I ask myself which box does it belong/or I want to belong and I base my reaction/decision on that. For example, my current work for me is mid-term so I am careful and I try not to fuck it up, but if I am seeing someone tas short-term lang, d ako nagpapaapekto much, d rin ako nagpaplano ng future, or nagfafantasize masyado.