Example traits are conscientiousness, perfectionism, tendency to artificial imposition of order (list-making, goal setting), higher anxiety levels than average, liking for routine and habit. What my sister and I have found is that these traits can be really helpful in some cases (frugality/Mustachianism is certainly one), whereas others can cause us undue stress (perfectionism) or can occasionally impede quality/enjoyment of life (anxiety).
This pretty closely describes my best beloved...
Up to a point, it also describes me!
I was going to start this post with "Ouch!" But then I realized that I DON'T find fault with my "conscientiousness, perfectionism, tendency to artificial (??) imposition of order (list-making, goal setting)... or liking for routine and habit." Having learned to ease off on the perfectionism, the rest provides me with a very satisfying sense of life order and control. I like it.
However, I definitely do not identify with the "higher anxiety levels than average." Being in control and being anxious strike me as contrary to each other.
Well, not seeing any downside to these traits is actually starting to edge out onto the side of 'disordered thinking' if you think YOU are absolutely correct in your super-controlled habits, and that the rest of the world sucks and should conform to your system. That is definitely a warning sign. If you just find that your system works well for you, and you realize other ways of managing work well for others, then that's more just regular personality traits.
Also, in OCPD, you are correct that the control/anxiety are contrary: it is exactly the sense of things being OUT of control that tends to make the OCPDer anxious...unknown situations, spontaneous occurrences, that sort of thing...they don't like it, so they strictly order their routine and environment so as to reduce anxiety and uncertainty. If they can't exert control over things, or limit their anxiety, it often tends to come out as anger. My OCPD father was more or less constantly angry or irritated, unless he could exert control.
For example, he couldn't just take a road trip....he had to plan down to the hour and the mile. If he got off-schedule by a few hours (even for a fun reason such as spending more time than planned at a great natural attraction, etc.) he'd fret and get anxious. If you were visiting him, you needed to tell him well in advance exactly when you were arriving, how long you were staying, etc., and then STICK TO IT. If it was hunting season, he kept strict track of his grouse-kill count, and how it compared to all the years before. Then he'd put his grouse in his freezer, strictly ordered by date, with the oldest years top and a chart taped to the top of the freezer reminding him of the layout and what was in each layer.
When he took a shower, he would meticulously wipe down the shower EVERY TIME using only one particular kind of cloth, so that water marks would never appear on the glass. If someone else happened to be staying at his house, he wouldn't trust them to do it correctly, but would rearrange his schedule to be available after every person showered, so that HE could wipe it down properly.
He would get irrationally angry if friends hailed him while he was standing in the checkout line at the grocery store, because couldn't that friend see that it would distract him from being able to make sure the check-out person wasn't making any errors or stealing from him?
He couldn't cope with the fact that people are a mix of good and bad traits...he wants things to be clearly good or bad, black or white...ambiguity creates anxiety. Needless to say, he would put friends and loved ones on a pedestal until they did something clearly contrary to what he thought acceptable. Then, they became 'worthless' and he would cut them off emotionally.
One of his sisters was born mildly mentally disabled and with epilepsy. Needless to say, she was a minimal achiever. He had little empathy for her. Her disabled affect, her weight, her limitations, just made him angry and he classified her as "gross and bad".
And in all of these cases, it never occurred to him to consider that his view of things might be skewed. To him, it was the rest of the world that was constantly screwing up...he was superior.
THAT is severe OCPD.