unit 5 subtle mind vs loving kindness

As usual it's hard for me to sit and listen to something.  In the subtle mind exercise I had to keep reminding myself to return to the breathing, my mind just wanders and I start to think about things that I have to do, relationship stuff, bills, school, etc.  It will take a lot of work for me to get that "witnessing mind".  The loving kindnes exercise is easier for me.  I can always think of someone that means a lot to me and things we've done together etc.  I love my friends and if I could I would take some of their pain away, sometimes I think I can handle it better or I just don't want them to hurt.