Water is often considered a healing element. The energies of water are often used to wash away aches, pains, negativity, heartache, and so forth. It can also be used to knit emotional aspects back to to heal traumas or rifts and so forth, with water being viewed somewhat as the glue that holds things together.
Earth is sometimes also used, helping to encourage growth once something has been mended and soothed.
Fire can purify, helping to remove the influences that might have been the problem in the first place.
Air can be used to lift spirits. Use it to inspire, and help lift others out of depression.
I'm sure there are other methods as well.