I tend to dive more aware of my surroundings, the anchor location, and the current and wind direction when diving off my boat. I prefer to have someone on the boat, but unless the conditions are very calm, my wife can’t handle the rocking. When I do dive solo on my boat, I dive more conservatively. I hardly ever anchor, instead I use moorings. These tend to be shallower dives, but at least I breathing compressed air. I double check the mooring condition before swimming off put a strobe light on the mooring and go enjoy my dive, continually paying attention to landmarks and current to guide me back to the mooring and strobe light.
For me, the best part of diving off my boat is the creature comforts post dive. Hot shower on the transom, cold beer, good tunes, air conditioned cabin if its too hot, it just doesn’t get better. Well it would be better with a buddy, but sometimes thats not an option.