Bugs: Surprisingly simple to fix. Make all your mood candles citronella scented and burn sage smudge sticks. Sage smoke is believed to cleanse bad energy from an area. I didn't put any stock in that until I realized it also drives off mosquitos. As far as I can tell, mosquitos are bad juju incarnate.
The Heat: Good luck practicing deep breathing relaxation techniques when its 90 degrees and 90% humidity.
Apartment Complex Lawn Mowing Day: Pretty much self explanatory. Lawn mowers do not make white noise.
Also: Crazy neighbors are more likely to be being crazy outdoors instead of indoors. When you have about a thousand people in a 5 acre space, people tend to get a little nutty. (Case in point, some of us like to burn incense and meditate on our balconies when its stupidly hot out.)