When you want to do as much as possible when it comes to blocking the noise from the outside, you want to use as many different methods as you can. Noise pollution is a dangerous thing - people can't think straight, it raises their stress level and it can even cause psychological problems. It's no wonder we are so eager to get away to a quite place and rest for a bit.
But, if you sound proof your home or the office space you work in, you won't have to look for the quietest place in your home to take a nap or rest for a bit. You will be able to enjoy in peace and quiet all of the time!
One inexpensive method you have to try out first is to use sound proof paint. It's way more cheaper than other sound proof methods and you can do everything by yourself here. Just buy this paint in a local store or order it online and use a regular roller to apply it over your walls. It will block 30% of external sounds, giving you at least some relief from the noisy outdoors.