Mountains and Molehills

I heard this saying from an early age, but never really got it till now.  During times of stress or if things didn't go my way, it ballooned and got more magnified in my mind.  I couldn't help myself.  The negative energy just fed on itself.  Even while repeating "Don't make mountains out of molehills in my head" wouldn't help.  Somehow my body and mind actually believed and practiced the saying.  Until that day comes, the saying is just words that go through one ear and out the other.  How can you speed up the "get it" process?  Can it even be done?  I intend to find out.