Don't brew when your guy instinct tells you not to... let me expand..
I had planned a brewday yesterday, some other weekend plans changed but I kept my schedule for the brew day. Got up, made breakfast, and I wasn't quite feeling it, went to the basement thinking, ok I'll fill the kettles and see if I get in my groove, hook the hose up the hlt, but I didn't open the valve, blew the hose off the quick connect fitting... uhhh maybe I should stop here, nope keep going, fill it, start heating, ok cool chugging along now, wife says did you add salts.. facepalm.. nope, quick add some salts before underletting. We'll I didn't add acid, ughhh whatever, I brewed a lot of good beer before adjusting my water, it'll be fine.. moving on, acidity sparge water at least.. check.. follow beersmith for water volume, it's a 15 gallon batch my volume to boil kettle came in a gallon short of estimated pre boil, wth, double checked everything, no idea what happened there, ok whatever I'm not gonna run anymore sparge water, just move on. It's a 90 min boil, boil starts, I add 60 min addition, didn't want to forget the bittering hops ya know

.. well I added them at 90min facepalm.. ok it's fine, move on, next issue, the pid on my setup, Eherms, starts acting funny, probably 30 minutes into 90 min boil it goes from 212f to all the sudden reading 207f but the boil is ripping, wth is going on, I switched a few things around to no avail, set pid to 209f and boils like normal so now I gotta figure that out for next brewday. Ok finish out the boil adding hops on time, chill, and fill fermenter, was able to scrounge enough to get a full batch in there even being short at the beginning of boil, take gravity reading.. a full 10 points short, estimated was 1.050 came in at 1.040, omg, wth, .. pitch yeast close it up set the temp and walk away. This did not go well. No real disaster and it'll make a good beer but damn, what a frustrating brew day and I knew it right from go, so next time your gut says, hey let's skip this brew day and knock it out another time, listen.
Don't ignore your gut instinct, don't do that.
I got some things to work on before my next batch haha..