If you don't tear up when Coop is watching the video transmission from Tom and Murph, you might not have a soul.
If you aren't completely overwhelmed or filled with anxiety and shortness of breath when Coop and Brand are docking to the Endurance, you might have better control of your emotions than me (or you might not have a soul)
If you feel like "meh, this is a one-time watch" then you most definitely don't have a soul.