Haha.. That's a pretty good idea !
Self Healing also leads to inner peace which will eventually help you in everything you do.
I think, you should focus on one by one for now.
When you have enough experience, you can help a group of people by motivating them and become their friend, just like Sam Wilson did in Captain America : The Winter Soldier.

How about you try starting by solving one of my Mental illness now ?

Shall I share my story ?
My story might not be 100% true as I will skip somethings that bothers me to share with anyone.
But I will try to make it 100% accurate.

:D