I have very definate ideas of right and wrong but will not impose them on anyone and seldom give advice unless asked by someone I know really well. I think the degree of introversion factors into this.
Another thing is it takes time to work things out in my head before I can respond, either spoken or written. Except under a lot of pressure, I won't say or do anything that is not thoroughly rehearsed in my mind ahead of time. It always amazes me when people just are able to think out loud.
I think it is hard to find real acceptance and get any attention from others as an ISTJ. When someone does show us appreciation and attention, we just bask in it and sometimes go completely overboard in our attachment to the kind person.
Here I go reviving another thread!