Have you considered mindfulness meditation? There are now many universities offering courses in MBSR (mindfulness-based stress reduction). It's a way of bringing you into the present and decreasing the "energy" around anxious thoughts. It can give you a sense of greater control over your mental state even when things are unpredictable.

Also you might consider noise cover for trying to sleep when other people are making noise, like getting a loud fan or air cleaner and running that to cover unwanted noises.

By the way, I often feel like I'm in a completely different mental state when I'm sleeping somewhere other than home -- usually a better state. It's frustrating because you just wish you could achieve that at home! But meditation might help.