Hi and welcome to Mystic Board

I loved your post It is full of enthusiasm and love. Your 'problem' is a very common one when people start taking their 'healing' to another level. It sounds to me like you are using your life-force to heal rather than being a channel for energy from 'the source'. The source, is whatever you personally believe it to be, some say Divine Spirit, some say God, there are many names and cultures to choose from. It is the power of the universe and it is all energy and all matter.

You need to learn to channel your energy and to use yourself as a conduit rather than the source. If you carry on using your own energy source you will find that you get more and more tired, and hot and sluggish, worn out, perhaps ill, headachy, tingly or even start to buzz continuously so you can't rest. Your inner strength will replace and renew itself but it takes time and more time than it does to send the energy and so we get depleted.

In my blog I posted two exercises about how to channel energy from the Earth/below and Spirit/above. They are simple and should straight away help you feel better. Investigate reiki too.

You do not need to stop 'healing' but you do need to learn how to stop and start the flow of energy and how to be able to tune it in. There will be times when you will be like a shining light beaming energy everywhere in a haphazard way and with just a little training and help you should be able to keep yourself happy and well and help many more others without feeling tired or achey