I wonder if it's not perhaps, the amount of time you have been doing it. You might not realise it, but it might have been just as difficult with strangers in the beginning. As you take care of your own family more frequently it would, not necesarily get easier to do, but definately easier to "handle".
My Biokineticist spoke to my about that the other day. It is sometimes very draining to her, not physically but mentall, especially with problem cases (Which now includes yours truely). She says that most of the time, she would get home and just not feel like doing anything. She struggles to explain it to her family and friends...
She had done boxing for quite a while and that used to help her a lot...but the patients is getting more as she has now gone from being an intern to a regular at the Biokineticks centre.
There is one day at the Biokineticist that I just have to share with you
Due to the marfans, I am a very tall guy and even though I am scrawny, I have a very large chest and wide shoulders, so I don't look "weak". My Biokinetecist on the other hand is a head shorter than my shoulder and has a very "petite" build. As I am lying flat on my back on the exercise matt, one of the other lady-patients walks by and goes "Oh my word! I have never seen such a huge guy being manhandled by someone of your size!".
In the moment, it was really hillarious...I think for any other guy it would have been quite embarresing but strangely enough, it didn't bother me in that way
But I think it does make sense that close family will allways upset you more than "strangers".
You should also count your self lucky, rather than embarresd by the fact that you can just sit down and cry out all those painfull feelings... It's definately doing you more good than bad
* Huge Hugs * & * Big Respect *