I've been finding it difficult to tell the difference between an ISFJ and an ISTJ in real life. I can of course point out the differences on paper. But attributing actions to Fe and Ti or Te and Fi often seems to have me confused. This increases in difficulty when the person in question has a 1 in their tri-type, which is a very common enneagram type in both the ISFJ and the ISTJ.
Do you guys know a good way of telling the difference irl?