Someone mentioned their check book. THAT is what I try to keep an eye on. We have two checking acts. One is our local bank and the other is an old credit union account we've used for maybe 30 years. One act. receives our SS and the other receives my pension. I typically look at the balances at least once a week. I like to know that all the electronic transfers IN have taken place on time. Also, having two accts. to draw on is one of my "back ups." If one act. were to be compromised, I would (in theory) have the other - call me paranoid and I won't even flinch!
Our spending is so lumpy that I look at checking balance almost every time we anticipate spending a $grand or more. The brokerage acct., the Index funds and the SPDAs, MYGAs, I-bonds, PMs, etc. are WAY too much trouble to calculate and (in reality) have little to do with day to day or even month to month spending. I know in general terms what the various markets are doing, so I know when NW is likely up or down a bit. SO, cranking through the numbers seems like "w*rk" to me. Same with recording our spending. As long as the check book(s) are flush, I know we're not out of bounds and our "enough status" is well in hand.
Absolutely NO criticism implied, but I'm surprised at how many retirees here check NW daily or weekly. Having said that I used to do that when anticipating FI. It was a good feeling seeing that I was approaching my goal (or, eventually exceeding it PRIOR to FIRE.) But, after retiring, most of my angst began to fade - especially after a year or two. Checking often became boring. I'm guessing that checking NW is a habit some of us formed and it's difficult to break. My (rhetorical) questions would be "How often do we make strategic or tactical changes based on daily or weekly NW calculations? If we're not tweaking our plans, why check so often?" Again, no suggestion that checking often is "wrong." Just wondering (to myself) what it gives us in return for the effort. Just wondering out loud, so YMMV.