If you wanna make 'when I face it boldy' shorter, it should be '(when) facing it boldly', only in case the subject of the subordinate clause is the same as the one in the main clause.

I'd say,
Face it: This has been my philosophy of life since I found my trouble amazingly vanished when I faced up to it boldy.
 

My philosophy of life

(1). It has been my philosophy of life that difficulties vanish when faced boldly.

This is okay, mostly. The only thing I would point out about it would be that since you used the phrase" has been" it could be questioned as to whether you still believe that to be the smartest avenue of though. It could go either way. I'll include some small examples.

Example 1. "It has been my philosophy of life that difficulties often vanish when faced boldly. That framework of mind has continued to lead me well in life."

Example 2. "It has been my philosophy of life that difficulties often vanish when faced boldly. However, lately this has not been proven to be particularly useful and my courageous nature has simply gotten me into some more trouble."

:) Good luck.

-Kyletin.

ur philosophy of life,me i can discuss with in this subject ,not to correct to u.
All from us has her or him philosophy but it depends from which one of us for example my philosophy of life is to do the right thing and always be hapiness and hope a bleesed of god,but urs isn't maybe the same .I use internet to learn only english ,other they use it to listen to music.We have a deffirent personnalities but i like to listen to ur philsophy Jenny.