The key I think to breath control once I got past the fear of the deep is having enough air in your diaphragm. I noticed that when I first start off I want to concentrate on breathing normal and thinking relax, but the last two trips to the pool I noticed that doesn’t work for me. First, I haven’t got use to the temperature in the water and secondly trying to breathe normal I tend to not or forget about putting air in my diaphragm. Once I do that I simply float better and am able to keep my head vertical as opposed to laying my head back because my normal buoyancy the surface of the water is eye level. Hope that sounds okay;.sorry if it doesn’t make sense. This is my 22-23 hour to threading practice. Thanks, Caribe Community.