Some stupidly obvious hacks that worked for me. Most were designed to help me push through ADHD issues, but would be just as useful for neurotypicals:
5 minute super intense cardio, as a replacement for long, low intensity cardio. It is easier to motivate oneself to do 5 minutes of Your-Heart-Might-Explode cardio than two hours of jogging or something. In fact it takes very little motivation, if you trick yourself into doing it right after waking up, when your brain is on autopilot anyway, and unable to resist routine.
pile stuff by the door, or put it in your shoes so you cannot leave the house without them.
download some kind of a Reminder App for all your devices, preferably one that can be cross-linked between them, but still functional when the cloud is not available. This has saved my bacon more than once, I externalized nearly all my memory this way, which is a huge stress relief in the long run.
take a page from the insane-prepper doomer book, and pile up on long lasting consumables, especially the ones that you will be buying anyway. If you have enough room, stock on hundreds of kilos of sugar, flour, mineral water, dry pasta, rice, coffee, toilet paper, soap etc etc. Not only is this cheaper that way, but reduced the hassle of running out of things at annoying times. This applies to tried and tested shoes and clothing as well.
hydration problem. A lot of people, like me, have issues drinking enough water. My solution is to by a ton of soluble tablets (electrolytes, multi-vitamin, potassium, calcium, magnesium etc, does not matter as long as they are sugar-free), then use one of each daily, dissolved in a tall glass of water. These things taste as good as soda, but are (marginally) good for your health, and trick you into drinking water.
whenever you are using anything with a screen, make sure that it is ABOVE your eye level, so that you are forced to sit straight and look up. Not only is that better for your spine, but helps with alertness. This is especially important if you are forced to use a computer long past your natural bedtime.
As a side tangent, I noticed lately that over a half of the distance I used to drive on a normal day, would take nearly the same time if I just walked, due to insane traffic.
For example, my morning work commute takes about 25 minutes by car, about 12 minutes by bicycle, and about 30ish minutes just walking briskly. This is because at least 60% of the “driving” is just sitting in traffic, so even though I can drive much faster than I can walk, it does not matter much. The car in traffic is not really a vehicle to move around in, but a movable couch to sit on while waiting.
This is especially true in the age of Google Maps and some such, which allows me to plot my walk/bike-ride through shortcuts that would be impossible to use if I was driving a car.
Running could probably be about 40% faster than walking in such circumstances, making driving all but pointless, unless I need to transport heavy loads or the weather is truly atrocious (but then again, atrocious weather makes driving yet harder and less efficient anyway).