If you have trouble falling asleep because of ringing in your ears caused by tinnitus, run a standing fan in your room it can make a huge difference. The white noise drowns out tinnitus symptoms and can help you fall asleep quickly.
Clean your house from top to bottom. The steady sound of the vacuum cleaner is music to a tinnitus sufferer's ears. The activity of doing household chores will distract you from the overwhelming noise in your ears, and eventually, you won't notice it. The added bonus is a clean, comfortable environment where you can relax.
To keep tinnitus from driving you crazy, project it out into the room. Visually pick some corner or object in the room you are in and mentally associate that as the source of the sound. If you pretend that it is not within you, then you can mentally relax that there is nothing wrong with you. This improves your mood and blood pressure.