I have a cousin/best friend that is an ISFP. She admits she takes everything personally when she doesn't want to. She strives to be more objective (Te as an aspirational role), while I strive to be more of a "people person" (Fe as an aspirational role). We both council each other on areas we're struggling with, and you can hear the difference between us just by our words. I'll say things like "You have to try and shrug that off..." or "Well, logically, this should happen..." or like recently, when I was giving her advice on how to approach a professor regarding a project she was worried she was going to fail. I said things like "have something to say before you go, and make sure you don't use any excuses...they hate that. And try to figure out which areas she's going to point out that are lacking, and show her that you know what you did wrong, and make a point on how you would improve it."
When she councils me, they're almost always within relationships I have with people. I'll tell her a story and she'll go: "Now, Steph, can't you why he/she would act that way When you did that? But I agree, I think you did the right thing here..." She points things out in a moral perspective, but is always encouraging and always "on my side." She always has really awesome "people insights."
Which is another point to make... ISFPs will almost always try to make their words to support you, whereas an ISTP will be more objective and maybe even play devil's advocate.