Reiki ~ How does it work ?

You most certainly can send healing to yourself. In fact after the first attunement many teach of a 21 day cleanse where the student performs healing and cleansing on themselves for 21 days. Which is a reminder of the 21 day fast that Mikao Usui did when he meditated on top of a mountain and brought down to mankind the energies of Reiki.

Self healing works very well.