I think therapy can really help some people with more normal problems such as work stress, marriage stuff, etc.
But...as regards suicide and severe depression, it tends not to work according to my experience and the experience of many other people here.
It's a shame. Why doesn't it work? Is it because they just don't understand us? Is it because we just can't be "healed"?
I dunno but, what I really hate, is when therapists just follow the book and are interested in nothing but your money.