CancerSecurity is on your mind, even more so than usual. Now, it absolutely doesn't hurt to double-check your locks, insurance policies, smoke alarms and so on and so forth, but if it feels like it's verging on paranoia, it might be time to take a step back and do two things: firstly, examine these feelings of fright and see if you can stop trying to push them away; secondly, get the heck outdoors and do something enjoyable.