If you live in a private house, you can plant some trees to block some of the noise that for an example come nearby road.

Slamming doors can sometimes be extremely annoying. To avoid this kind of interruption, you can add thin rubber-pads on the edges of the door. This avoids the noise that comes into being when someone closes the door but also it avoids the door from attrition.

Although it depends much on materials which are used to build the house, some things can be made better even with elderly houses. Small openings are the main reason why noise keeps coming into rooms. Sealing these holes can decrease the level of noise considerably and it is really the cheapest method.

All in all, if it is not possible to block all noise that interrupts your well-being, you can mask the noise with soothing sounds. For an example, you can use fountains or aquariums.