Breathing helps the immune system and the cells to develop normally. Conscious breathing sends the right signal to the brain that all is good and peaceful. The breath is the bridge to connect your body, your mind and your soul. If you breathe in awareness, your body will be healthier, your mind peaceful and your consciousness will upgrade to a higher frequency. The breath is the bridge to connect your small universe with the Big Universe. Breathe and ask the Universe to bring you peace and to take away everything that makes you suffer, all your negativity.
If you keep living in the future, if you keep living in the past, you will miss this nowness, now and here. You cannot change the past, but you can use this nowness, to make the ingredients for what you want to make of the future.