As many berserkers in training soon discover, the berserker path necessitates a lot of healing. The same kind of enhancement that works for strength will work for healing. Just elevating will speed up the healing process, as long as you keep yourself well fed.
But we can do better than that.
The key is gestaltic visualization. Visualize the location of the injury. Concentrate on the feel of the injury. Try to picture the parts of your body that actually do the healing. Picture your body as a whole, coursing with power. Picture your elevated self. Picture yourself free of injury. Visualize every detail of the injured parts of your body from as many perspectives as possible. Visualize healing runes. Visualize them on your injury. Visualize yourself inhaling healing energy from the world around you, and directing it to the wound.
Keep switching from one image to another. Concentrate powerfully on each, but linger on none.
You are aiming to build up a powerful, complex, detailed image of your injury and your healing, one far more complex than you can manage just by concentrating on one thing. This will recruit and focus FAR more of your mind into the healing effort, and the speed with which you heal should improve.