Yes OPSEC definitely plays into it. I maintain, modernize and retire our Navy's nuclear fleet. I am raising my kids by myself but they're nearly grown. That was my biggest purpose. I was proficient at MCMAP but just signed up for Brazilian jiu-jitsu. I'm hoping I can really get into that.I would imagine OPSEC comes into play somewhere here but I'm out so IDC.
If your purpose in life is your job, you need to find a more interesting purpose and hobby.
*Caveat: If your job is running your own business, that can count as a 'purpose'. However, one's job/career isn't really what folks mean when they say what their purpose is.
Purpose = What dent are you trying to make in the universe?