I have bad anxiety and I have struggled to find something that keeps my mind calm and focused on something besides my anxiety. I decided to try this noise machine at my office to see how it would work. It is very compact and very easy to operate, I just plugged into my computer and turned it on. The sound quality is great and I love that there are 36 sounds I can chose from. This has helped me immensely to focus on my work and keep my mind on track.