Sorry to her that Ambience, I suffer myself! there is not too many health spreads because of the ethical considerations. Don't use it as an excuse to not see a professional, it's not a replacement for that! But I have found them helpful for myself and exploring about it.
Here is some spread suggestions for you. 'mental health' is a big umbrella and they are mostly about anxiety on here, but some ideas and some of my fave spreads on here...
helping with anxiety - http://www.tarotforum.net/showthread.php?t=177836
love this spread! it's basically what can I do more of? what can I do less of? what could I try out? (new element). some people do it daily when bad! it's 3 cards and easy!
light at the end of the tunnel - http://www.tarotforum.net/showthread.php?p=2168212
this cheers me up when things seem bad! there is two variations of it. it's a positive spread of the glimmer of light that is coming